{"title":"mh z19 \/ mhz19b","description":null,"products":[{"product_id":"mh-z19-mh-z19e-ir-infrared-co2-sensor-module-carbon-dioxide-gas-sensor-ndir-for-co2-monitor-400-5000ppm-uart-pwm-output-mh-z19e","title":"MH-Z19 MH-Z19E IR Infrared CO2 Sensor Module Carbon Dioxide Gas Sensor NDIR for CO2 Monitor 400-5000ppm UART PWM Output MH Z19E","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCO2 Sensor Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;position:relative;box-sizing:border-box' align=\"start\"\u003e\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-height:1200px;overflow:hidden;position:relative;box-sizing:border-box\"\u003e\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cdiv id=\"product-description\" style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:944px;overflow:hidden;position:relative;box-sizing:border-box\"\u003e\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\n\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='background-color:rgb(255, 255, 255);color:rgb(244, 78, 59);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eMH-Z19E MH-Z19D, the specifications are the same, the model name is changed by the factory.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19E\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~5000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;display:block;width:100%\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sccbe053926bd469283db396209a382f42.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S498fbe542a734da1aab8d73a05b24a18O.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S00d7b3f34d514b22865966b355ace21cs.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5f3da61e8ef440ffaec2e6ec0dd16956m.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S76b503a911b44154b4470eaabb527fbd3.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Z19E with Terminal","offer_id":55419858288939,"sku":"14:10#Z19E with Terminal","price":79.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sd83b1eb1e5f64e7fb5de27093467d622z.webp?v=1788495454"},{"product_id":"mh-z19-mh-z19z-mh-z19c-ir-infrared-sensor-module-co2-carbon-dioxide-gas-digital-sensor-ndir-for-co2-monitor-400-5000ppm-uart-pwm","title":"MH-Z19 MH-Z19Z MH Z19C IR Infrared Sensor Module CO2 Carbon Dioxide Gas Digital Sensor NDIR for CO2 Monitor 400-5000ppm UART PWM","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSZFYDOSH\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInductance Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv style=\"font-size:13px\"\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eThe MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"color:rgb(255, 0, 0)\"\u003e\u003cu\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eProduct parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePower supply voltage: DC (5.0 ± 0.1) V\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePeak current: 125 to (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eInterface level: 3. 3v (compatible with 5v)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eMeasuring range: 400-5000PPM optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eOutput signal: serial UART (TL level 3.3V)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eResponse time: T90\u0026lt; 120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eWorking temperature: -10-50degree\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eWorking humidity: 0~95%RH (no condensation)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"color:rgb(255, 0, 0)\"\u003e\u003cu\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePin description:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eVin: Power +(in)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eGND: power supply-(GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eHd: HD (zero calibration, low level is effective for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eRx: UART (RXD) TTL level data input\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eOutput method:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan style=\"color:rgb(192, 0, 0)\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePWM output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eAssume the measurement range is 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eCO2: Concentration output range: 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePeriod: 1004ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eHigh level output at the beginning of the cycle: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eCentral period: 1000ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eLow level output at the end of the period: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eCalculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)\/(TH+TL-4ms)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eCppm: CO2 concentration value calculated by the unit of ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eTH: the time when the output is high level in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eTL: the time when the output is low in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;text-align:center;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9efd50c8778748a0833e460a03865f37p.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan style=\"color:rgb(192, 0, 0)\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eSerial output (UART)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003eHardware connection, connect the sensor's Vin-GND-RXD-TXD to the user's 5V-GND-TXD-RXD. (User terminal must use TTL level)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;text-align:center;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S23019806ee764e4286b01fecaf5b2d75p.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"color:rgb(255, 0, 0)\"\u003e\u003cu\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003ePrecautions:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e1. In the process of welding, installation and use of the sensor, the gold-plated plastic cavity should be prevented from withstanding pressure in any direction.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e2. If the sensor needs to be placed in a small space, this space should be well ventilated, especially the two diffusion windows should be in a well ventilated position.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e3. The sensor should be far away from the heat source, and avoid direct sunlight or other heat radiation.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e4. The sensor should be calibrated regularly, and the calibration period is recommended to be no more than 6 months.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e5. Do not use the sensor for a long time in the environment with high dust density.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e6. In order to ensure that the sensor can work normally, the power supply voltage must be maintained at (5.0 ± 0.1) VDC. The power supply current must not be less than 150mA\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e7. If it is not within this range, the sensor may be faulty, the output concentration of the sensor is low or the sensor cannot work normally.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e8. When manually calibrating the zero point or sending the command to calibrate the main points, it must be stable\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e9. Work continuously for more than 20 minutes in a gas environment (400ppm).\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e10. The sensor is prohibited to use wave peak depth.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e11. When welding with iron, set the temperature to (350±5) degree, early\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e12. The pick-up time must be less than 35.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"font-size:14px;color:#000000;margin:0px;padding:0px;\";box-sizing:content-box'\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cspan\u003e\u003cspan style='font-family:\"margin:0px;padding:0px;\"'\u003e13. When using the sensor, it is recommended that the customer use the method of inserting the solder bump to directly insert and remove the sensor for toilet maintenance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sa4fee0b8bfef4dfba24a7a7a76bd14cdu.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Se20068f2ba904c85a15363c9e8663d2d7.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4dbb4bdf021a4f98a45e59b34da24c54L.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sdc713ee3b15448b0977d5bfc2f8312b68.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S3a8b71d2b2b44648aa5e00e4e36f7649m.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"400-2000PPM pin","offer_id":55419860058411,"sku":"14:173#400-2000PPM pin","price":118.04,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm","offer_id":55419860091179,"sku":"14:29#400-5000ppm","price":118.04,"currency_code":"USD","in_stock":false},{"title":"400-5000PPM pin","offer_id":55419860123947,"sku":"14:175#400-5000PPM pin","price":118.04,"currency_code":"USD","in_stock":false},{"title":"400-2000PPM","offer_id":55419860156715,"sku":"14:10#400-2000PPM","price":118.04,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Seabbde96b0b34e4e955bf0b70639dc5aa.webp?v=1788495468"},{"product_id":"2pcs-1pc-mh-z1911a-mh-z19-ndir-co2-carbon-dioxide-air-gas-sensor-module-mhz19-infrared-ir-400-5000ppm-for-co2-monitor","title":"2pcs\/1pc MH-Z1911A MH-Z19 NDIR CO2 Carbon Dioxide Air Gas Sensor Module MHZ19 Infrared IR 400-5000ppm for CO2 Monitor","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYour Cee\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAnalog Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInductance Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc2ea2483baae4b1bbce3ff9c541790daS.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2268e6493b2245bf9f0a8a772d256857X.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"MH-Z1911A with cable \/ 2pcs","offer_id":55440977854763,"sku":"14:29#MH-Z1911A with cable;3:201010228#2pcs","price":84.92,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with cable \/ 1pc","offer_id":55440977887531,"sku":"14:29#MH-Z1911A with cable;3:1981284404#1pc","price":42.26,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 2pcs","offer_id":55440977920299,"sku":"14:10#MH-Z1911A with pin;3:201010228#2pcs","price":88.07,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 1pc","offer_id":55440977953067,"sku":"14:10#MH-Z1911A with pin;3:1981284404#1pc","price":43.83,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sdfbbbbb50e2444dea43eda26372d3446a.webp?v=1788748245"},{"product_id":"mh-z19-mh-z19c-mh-z19b-mh-z19e-ir-infrared-co2-sensor-module-carbon-dioxide-gas-sensors-ndir-co2-monitor-400-5000-0-5000ppm-uart","title":"MH-Z19 MH-Z19C MH-Z19B MH-Z19E IR Infrared CO2 Sensor Module Carbon Dioxide Gas Sensors NDIR CO2 Monitor 400-5000 0-5000ppm UART","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eEC Buying\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMHZ19 MHZ19B MHZ19C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 2\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAir Quality Sensor For Arduino\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 3\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003emh-z19d mh z19d\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSmart Electronics Experiment\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSwitch And Sensor For Arduino STM32\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCO2 Sensor Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cspan style='color:rgb(244, 78, 59);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eMH-Z19E MH-Z19D, the specifications are the same, the model name is changed by the factory.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic  Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProduct model number: MH-Z19B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:22px;font-family:\"times new roman\", times, serif'\u003eGas Detection: Carbon Dioxide\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSupply voltage: 4.5~5.5V DC\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;20mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePeak current: 150 mA (@5V supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (5V compatible)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMeasurement range: 400~5000ppm can be selected within the range \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWarm-up time: 3min\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt;120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWorking temperature: 0～50°C\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eOperating Humidity: 0 to 95% RH (non-condensing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eCharacteristics:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGas chamber with gold plating, waterproof and corrosion resistant\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProvides serial (UART), analog (DAC), PWM waveform output methods\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWater vapor interference, not poisoning\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHVAC refrigeration equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSCHOOL\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;text-align:center;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\" align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf6ab5a8f7f2b46fda89a508e5ed715bbw.jpg?width=891\u0026amp;height=197\u0026amp;hash=1088\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVin: Power Positive (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGND: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVo: Analog output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHD: HD (zero for school, low for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eRx: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 1: Analog Output Vo\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 2: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 3: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 4: Positive Power Supply (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 5: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 6: UART (TXD) TTL Level Data Output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 7: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H103363e535614f108474955dc1e6ba45k.jpg?width=921\u0026amp;height=318\u0026amp;hash=1239\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1c31744bbb2b4e44acb40418eda2a71b8.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H63e6ec593740497d9ede53163dcde8c6o.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H344143470f4d46a29d29733eb5f01bady.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eProduct parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC (5.0 ± 0.1) V\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 to (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eInterface level: 3. 3v (compatible with 5v)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400-5000PPM optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial UART (TL level 3.3V)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt; 120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10-50degree\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0~95%RH (no condensation)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePin description:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eVin: Power +(in)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eGND: power supply-(GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHd: HD (zero calibration, low level is effective for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eRx: UART (RXD) TTL level data input\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput method:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAssume the measurement range is 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCO2: Concentration output range: 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeriod: 1004ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHigh level output at the beginning of the cycle: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCentral period: 1000ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eLow level output at the end of the period: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCalculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)\/(TH+TL-4ms)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCppm: CO2 concentration value calculated by the unit of ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTH: the time when the output is high level in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTL: the time when the output is low in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf0154abb58c849cc9d9a83493806d030t.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eSerial output (UART)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHardware connection, connect the sensor's Vin-GND-RXD-TXD to the user's 5V-GND-TXD-RXD. (User terminal must use TTL level)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H60c5f80e7df948f29da644714a70dd0cc.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H5b36cf6e40d449a584239b746aae33b2a.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Ha4a9c80ae84540e7969294e44cf4128e2.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19E\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~5000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H437457cdab884b46b9d21b7832da57a4y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H091347f2ef3b4f5cbbfa753c1278382bf.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hff309af85ea14f819789212a53aa53b5y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H991e6693c853490d88aefcd4c5af97220.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H7e09b1df705346c39706473d85683d12A.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, anti-poisoning\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa592450ac4da4df5a8392add876ab101O.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa988797aecc3448db1bedc915388db6ck.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Z19D with Terminal","offer_id":55440995287339,"sku":"14:496#Z19D with Terminal","price":60.12,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Pin","offer_id":55440995320107,"sku":"14:175#MH-Z19C with Pin","price":101.79,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B with Cable","offer_id":55440995352875,"sku":"14:173#MH-Z19B with Cable","price":101.3,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B","offer_id":55440995385643,"sku":"14:10#MH-Z19B","price":101.75,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Pin","offer_id":55440995418411,"sku":"14:29#MH-Z1911A with Pin","price":43.07,"currency_code":"USD","in_stock":false},{"title":"Z19D with Pin","offer_id":55440995451179,"sku":"14:366#Z19D with Pin","price":59.99,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Cable","offer_id":55440995483947,"sku":"14:365458#MH-Z1911A with Cable","price":41.63,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Cable","offer_id":55440995516715,"sku":"14:193#MH-Z19C with Cable","price":101.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/H24317a4de0274c79ad366ee9283d0bd39.webp?v=1788748325"},{"product_id":"2pcs-1pc-mh-z1911a-mh-z19-ndir-co2-carbon-dioxide-air-gas-sensor-module-mhz19-infrared-ir-400-5000ppm-for-co2-monitor-1","title":"2pcs\/1pc MH-Z1911A MH-Z19 NDIR CO2 Carbon Dioxide Air Gas Sensor Module MHZ19 Infrared IR 400-5000ppm for CO2 Monitor","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYour Cee\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAnalog Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInductance Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc2ea2483baae4b1bbce3ff9c541790daS.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2268e6493b2245bf9f0a8a772d256857X.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"MH-Z1911A with cable \/ 2pcs","offer_id":55441006625067,"sku":"14:29#MH-Z1911A with cable;3:201010228#2pcs","price":84.92,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with cable \/ 1pc","offer_id":55441006657835,"sku":"14:29#MH-Z1911A with cable;3:1981284404#1pc","price":42.26,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 2pcs","offer_id":55441006690603,"sku":"14:10#MH-Z1911A with pin;3:201010228#2pcs","price":88.07,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 1pc","offer_id":55441006723371,"sku":"14:10#MH-Z1911A with pin;3:1981284404#1pc","price":43.83,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sdfbbbbb50e2444dea43eda26372d3446a_a57858a5-beee-4d40-b624-67d11e63b44d.webp?v=1788748454"},{"product_id":"mh-z19-mh-z19c-mh-z19b-mh-z19e-ir-infrared-co2-sensor-module-carbon-dioxide-gas-sensors-ndir-co2-monitor-400-5000-0-5000ppm-uart-1","title":"MH-Z19 MH-Z19C MH-Z19B MH-Z19E IR Infrared CO2 Sensor Module Carbon Dioxide Gas Sensors NDIR CO2 Monitor 400-5000 0-5000ppm UART","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eEC Buying\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMHZ19 MHZ19B MHZ19C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 2\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAir Quality Sensor For Arduino\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 3\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003emh-z19d mh z19d\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSmart Electronics Experiment\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSwitch And Sensor For Arduino STM32\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCO2 Sensor Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cspan style='color:rgb(244, 78, 59);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eMH-Z19E MH-Z19D, the specifications are the same, the model name is changed by the factory.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic  Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProduct model number: MH-Z19B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:22px;font-family:\"times new roman\", times, serif'\u003eGas Detection: Carbon Dioxide\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSupply voltage: 4.5~5.5V DC\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;20mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePeak current: 150 mA (@5V supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (5V compatible)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMeasurement range: 400~5000ppm can be selected within the range \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWarm-up time: 3min\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt;120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWorking temperature: 0～50°C\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eOperating Humidity: 0 to 95% RH (non-condensing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eCharacteristics:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGas chamber with gold plating, waterproof and corrosion resistant\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProvides serial (UART), analog (DAC), PWM waveform output methods\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWater vapor interference, not poisoning\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHVAC refrigeration equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSCHOOL\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;text-align:center;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\" align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf6ab5a8f7f2b46fda89a508e5ed715bbw.jpg?width=891\u0026amp;height=197\u0026amp;hash=1088\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVin: Power Positive (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGND: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVo: Analog output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHD: HD (zero for school, low for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eRx: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 1: Analog Output Vo\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 2: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 3: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 4: Positive Power Supply (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 5: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 6: UART (TXD) TTL Level Data Output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 7: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H103363e535614f108474955dc1e6ba45k.jpg?width=921\u0026amp;height=318\u0026amp;hash=1239\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1c31744bbb2b4e44acb40418eda2a71b8.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H63e6ec593740497d9ede53163dcde8c6o.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H344143470f4d46a29d29733eb5f01bady.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eProduct parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC (5.0 ± 0.1) V\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 to (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eInterface level: 3. 3v (compatible with 5v)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400-5000PPM optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial UART (TL level 3.3V)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt; 120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10-50degree\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0~95%RH (no condensation)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePin description:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eVin: Power +(in)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eGND: power supply-(GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHd: HD (zero calibration, low level is effective for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eRx: UART (RXD) TTL level data input\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput method:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAssume the measurement range is 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCO2: Concentration output range: 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeriod: 1004ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHigh level output at the beginning of the cycle: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCentral period: 1000ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eLow level output at the end of the period: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCalculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)\/(TH+TL-4ms)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCppm: CO2 concentration value calculated by the unit of ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTH: the time when the output is high level in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTL: the time when the output is low in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf0154abb58c849cc9d9a83493806d030t.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eSerial output (UART)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHardware connection, connect the sensor's Vin-GND-RXD-TXD to the user's 5V-GND-TXD-RXD. (User terminal must use TTL level)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H60c5f80e7df948f29da644714a70dd0cc.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H5b36cf6e40d449a584239b746aae33b2a.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Ha4a9c80ae84540e7969294e44cf4128e2.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19E\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~5000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H437457cdab884b46b9d21b7832da57a4y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H091347f2ef3b4f5cbbfa753c1278382bf.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hff309af85ea14f819789212a53aa53b5y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H991e6693c853490d88aefcd4c5af97220.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H7e09b1df705346c39706473d85683d12A.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, anti-poisoning\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa592450ac4da4df5a8392add876ab101O.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa988797aecc3448db1bedc915388db6ck.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Z19D with Terminal","offer_id":55441027268907,"sku":"14:496#Z19D with Terminal","price":60.12,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Pin","offer_id":55441027301675,"sku":"14:175#MH-Z19C with Pin","price":101.79,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B with Cable","offer_id":55441027334443,"sku":"14:173#MH-Z19B with Cable","price":101.3,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B","offer_id":55441027367211,"sku":"14:10#MH-Z19B","price":101.75,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Pin","offer_id":55441027399979,"sku":"14:29#MH-Z1911A with Pin","price":43.07,"currency_code":"USD","in_stock":false},{"title":"Z19D with Pin","offer_id":55441027432747,"sku":"14:366#Z19D with Pin","price":59.99,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Cable","offer_id":55441027465515,"sku":"14:365458#MH-Z1911A with Cable","price":41.63,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Cable","offer_id":55441027498283,"sku":"14:193#MH-Z19C with Cable","price":101.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/H24317a4de0274c79ad366ee9283d0bd39_df62523e-6933-4be7-833e-8fe7256e6186.webp?v=1788748541"},{"product_id":"2pcs-1pc-mh-z1911a-mh-z19-ndir-co2-carbon-dioxide-air-gas-sensor-module-mhz19-infrared-ir-400-5000ppm-for-co2-monitor-2","title":"2pcs\/1pc MH-Z1911A MH-Z19 NDIR CO2 Carbon Dioxide Air Gas Sensor Module MHZ19 Infrared IR 400-5000ppm for CO2 Monitor","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYour Cee\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAnalog Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInductance Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc2ea2483baae4b1bbce3ff9c541790daS.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2268e6493b2245bf9f0a8a772d256857X.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"MH-Z1911A with cable \/ 2pcs","offer_id":55441041195307,"sku":"14:29#MH-Z1911A with cable;3:201010228#2pcs","price":84.92,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with cable \/ 1pc","offer_id":55441041228075,"sku":"14:29#MH-Z1911A with cable;3:1981284404#1pc","price":42.26,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 2pcs","offer_id":55441041260843,"sku":"14:10#MH-Z1911A with pin;3:201010228#2pcs","price":88.07,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with pin \/ 1pc","offer_id":55441041293611,"sku":"14:10#MH-Z1911A with pin;3:1981284404#1pc","price":43.83,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sdfbbbbb50e2444dea43eda26372d3446a_009fe5bc-de45-449b-805b-e15de0c87b23.webp?v=1788748657"},{"product_id":"mh-z19-mh-z19c-mh-z19b-mh-z19e-ir-infrared-co2-sensor-module-carbon-dioxide-gas-sensors-ndir-co2-monitor-400-5000-0-5000ppm-uart-2","title":"MH-Z19 MH-Z19C MH-Z19B MH-Z19E IR Infrared CO2 Sensor Module Carbon Dioxide Gas Sensors NDIR CO2 Monitor 400-5000 0-5000ppm UART","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eEC Buying\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMHZ19 MHZ19B MHZ19C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 2\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAir Quality Sensor For Arduino\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOther 3\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003emh-z19d mh z19d\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSmart Electronics Experiment\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSwitch And Sensor For Arduino STM32\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCO2 Sensor Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cspan style='color:rgb(244, 78, 59);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eMH-Z19E MH-Z19D, the specifications are the same, the model name is changed by the factory.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic  Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProduct model number: MH-Z19B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:22px;font-family:\"times new roman\", times, serif'\u003eGas Detection: Carbon Dioxide\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSupply voltage: 4.5~5.5V DC\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;20mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePeak current: 150 mA (@5V supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (5V compatible)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMeasurement range: 400~5000ppm can be selected within the range \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWarm-up time: 3min\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt;120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWorking temperature: 0～50°C\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eOperating Humidity: 0 to 95% RH (non-condensing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eCharacteristics:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGas chamber with gold plating, waterproof and corrosion resistant\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProvides serial (UART), analog (DAC), PWM waveform output methods\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWater vapor interference, not poisoning\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHVAC refrigeration equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSCHOOL\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;text-align:center;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\" align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf6ab5a8f7f2b46fda89a508e5ed715bbw.jpg?width=891\u0026amp;height=197\u0026amp;hash=1088\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVin: Power Positive (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGND: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVo: Analog output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHD: HD (zero for school, low for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eRx: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 1: Analog Output Vo\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 2: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 3: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 4: Positive Power Supply (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 5: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 6: UART (TXD) TTL Level Data Output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 7: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H103363e535614f108474955dc1e6ba45k.jpg?width=921\u0026amp;height=318\u0026amp;hash=1239\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1c31744bbb2b4e44acb40418eda2a71b8.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H63e6ec593740497d9ede53163dcde8c6o.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H344143470f4d46a29d29733eb5f01bady.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eProduct parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC (5.0 ± 0.1) V\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 to (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eInterface level: 3. 3v (compatible with 5v)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400-5000PPM optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial UART (TL level 3.3V)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt; 120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10-50degree\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0~95%RH (no condensation)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePin description:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eVin: Power +(in)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eGND: power supply-(GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHd: HD (zero calibration, low level is effective for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eRx: UART (RXD) TTL level data input\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eOutput method:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePWM output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eAssume the measurement range is 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCO2: Concentration output range: 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003ePeriod: 1004ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHigh level output at the beginning of the cycle: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCentral period: 1000ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eLow level output at the end of the period: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCalculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)\/(TH+TL-4ms)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eCppm: CO2 concentration value calculated by the unit of ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTH: the time when the output is high level in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eTL: the time when the output is low in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hf0154abb58c849cc9d9a83493806d030t.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"color:rgb(192, 0, 0);font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:inherit;font-family:inherit\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eSerial output (UART)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style=\"font-size:20px;font-family:inherit\"\u003e\u003cspan style='font-size:inherit;font-family:\"times new roman\", times, serif'\u003eHardware connection, connect the sensor's Vin-GND-RXD-TXD to the user's 5V-GND-TXD-RXD. (User terminal must use TTL level)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cimg style=\"font-family:inherit;font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box\" src=\"https:\/\/ae01.alicdn.com\/kf\/H60c5f80e7df948f29da644714a70dd0cc.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"open sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H5b36cf6e40d449a584239b746aae33b2a.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Ha4a9c80ae84540e7969294e44cf4128e2.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19E carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19E\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~5000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H437457cdab884b46b9d21b7832da57a4y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H091347f2ef3b4f5cbbfa753c1278382bf.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hff309af85ea14f819789212a53aa53b5y.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H991e6693c853490d88aefcd4c5af97220.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H7e09b1df705346c39706473d85683d12A.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, anti-poisoning\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"text-align:center\" align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa592450ac4da4df5a8392add876ab101O.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa988797aecc3448db1bedc915388db6ck.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Z19D with Terminal","offer_id":55441055449387,"sku":"14:496#Z19D with Terminal","price":60.12,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Pin","offer_id":55441055482155,"sku":"14:175#MH-Z19C with Pin","price":101.79,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B with Cable","offer_id":55441055514923,"sku":"14:173#MH-Z19B with Cable","price":101.3,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B","offer_id":55441055547691,"sku":"14:10#MH-Z19B","price":101.75,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Pin","offer_id":55441055580459,"sku":"14:29#MH-Z1911A with Pin","price":43.07,"currency_code":"USD","in_stock":false},{"title":"Z19D with Pin","offer_id":55441055613227,"sku":"14:366#Z19D with Pin","price":59.99,"currency_code":"USD","in_stock":false},{"title":"MH-Z1911A with Cable","offer_id":55441055645995,"sku":"14:365458#MH-Z1911A with Cable","price":41.63,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Cable","offer_id":55441055678763,"sku":"14:193#MH-Z19C with Cable","price":101.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/H24317a4de0274c79ad366ee9283d0bd39_4c6556e8-97ed-415d-97eb-fd34898de0b3.webp?v=1788748717"},{"product_id":"mh-z19-mh-z19c-infrared-carbon-dioxide-sensor-module-gas-sensor-for-carbon-dioxide-monitor-0-5000ppm-400-5000ppm-mh-z19b-ndir","title":"MH-Z19 MH-Z19C infrared carbon dioxide sensor module gas sensor for carbon dioxide monitor 0-5000ppm 400-5000ppm MH Z19B NDIR","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMH-Z19B carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose smart small-scale sensor that uses non-dispersive infrared (NDIR) principle to detect the presence of CO2 in the air, with good selectivity and anaerobic  Gas dependence, long life and other characteristics; built-in temperature compensation; at the same time with serial output, analog output and PWM output, easy to use. The sensor is a high-performance sensor that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProduct model number: MH-Z19B\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:22px;font-family:\"times new roman\", times, serif'\u003eGas Detection: Carbon Dioxide\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSupply voltage: 4.5~5.5V DC\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;20mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePeak current: 150 mA (@5V supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (5V compatible)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMeasurement range: 400~5000ppm can be selected within the range (MH-Z19B\/MH-Z19B With Pin is 0-5000ppm, MH-Z19B With Cable is 400-5000ppm)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWarm-up time: 3min\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eResponse time: T90\u0026lt;120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWorking temperature: 0～50°C\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eOperating Humidity: 0 to 95% RH (non-condensing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eCharacteristics:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGas chamber with gold plating, waterproof and corrosion resistant\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eProvides serial (UART), analog (DAC), PWM waveform output methods\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWater vapor interference, not poisoning\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHVAC refrigeration equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"font-size:14px;font-weight:400;line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSCHOOL\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sa208c86babf747dca2193043c2a4f3c06.jpg?width=891\u0026amp;height=197\u0026amp;hash=1088\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVin: Power Positive (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eGND: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eVo: Analog output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eHD: HD (zero for school, low for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eRx: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 1: Analog Output Vo\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 2: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 3: Negative Power Supply (GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 4: Positive Power Supply (Vin)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 5: UART(RXD) TTL Level Data Input\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 6: UART (TXD) TTL Level Data Output\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePin 7: None\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S54fa0c45dde144c28463a9433c12d6ffI.jpg?width=921\u0026amp;height=318\u0026amp;hash=1239\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:start;white-space:normal;color:rgb(34, 34, 34);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"start\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4ba5d9e7d8e44a51b5401efaace9a535q.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Scb578ee8d32f4434b910285c90022f3aL.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S105baebb7a974dbd91115dba849905fdY.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"MH-Z19B \/ China Mainland","offer_id":55441072488747,"sku":"14:29#MH-Z19B;200007763:201336100","price":196.52,"currency_code":"USD","in_stock":false},{"title":"With Pin \/ China Mainland","offer_id":55441072521515,"sku":"14:193#With Pin;200007763:201336100","price":194.85,"currency_code":"USD","in_stock":false},{"title":"With Cable \/ China Mainland","offer_id":55441072554283,"sku":"14:173#With Cable;200007763:201336100","price":201.69,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S81448eebd1d74a3daafe4e08fa3e861ex.webp?v=1788748859"},{"product_id":"mh-z19b-c-infrared-co2-sensor-for-co2-monitor-mh-z19c-5000ppm-mh-z19b-ndir-gas-sensor-co2-gas-sensor-mh-z19","title":"MH Z19B\/C Infrared CO2 Sensor for CO2 Monitor MH-Z19C 5000PPM MH-Z19B NDIR Gas Sensor CO2 gas sensor MH-Z19","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eWuQianYi\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAnalog Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eOptical Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBiosensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eConsumption Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\n\u003cp style=\"font-family:arial, helvetica;font-size:15px;line-height:15.6px;color:rgb(0, 0, 0);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:inherit\"\u003e\u003cspan style=\"font-size:16px\"\u003e1. Profile\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"font-family:arial, helvetica;font-size:15px;line-height:15.6px;color:rgb(0, 0, 0);border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;text-align:justify;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\" align=\"justify\"\u003e\u003cspan style=\"font-size:16px\"\u003eMH-Z19 NDIR infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:inherit\"\u003e\u003cspan style=\"font-size:16px\"\u003e2. Applications\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eMH-Z19 NDIR infrared gas module is widely used in * HVAC refrigeration\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003e*Indoor air quality monitoring.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003e*Smart home appliances\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003e*School\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003e*Air cleaner\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:inherit\"\u003e\u003cspan style=\"font-size:16px\"\u003e3. Main Functions and Features\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eHigh sensitivity, high resolution\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eLow power consumption\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eOutput modes:UART ,PWm wave.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eGood stability\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003elonglife span\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cspan style=\"font-size:16px\"\u003eanti-water vapor interference\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:inherit;font-weight:inherit;line-height:inherit;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\"\u003e\u003cimg style=\"font-size:0px;font-weight:inherit;line-height:inherit;color:transparent;border:0px;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1V9iHQXXXXXbRapXXq6xXFXXXl\/202644791\/HTB1V9iHQXXXXXbRapXXq6xXFXXXl.jpg?size=24344\u0026amp;height=503\u0026amp;width=573\u0026amp;hash=48eeb83eed0d84d45cc3f00b277e46e2\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55441182490923,"sku":"\u003cnone\u003e","price":117.23,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/HTB1GElAQpXXXXbcaXXXq6xXFXXXA.webp?v=1788749946"},{"product_id":"mh-z19-mh-z19d-co2-sensor-module-ir-infrared-carbon-dioxide-gas-sensor-for-co2-monitor-400-5000ppm-uart-pwm-output-mh-z19d-ndir","title":"MH-Z19 MH-Z19D CO2 Sensor Module IR Infrared Carbon Dioxide Gas Sensor for CO2 Monitor 400-5000ppm UART PWM Output MH Z19D NDIR","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSZYTF\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eOther\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTheory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eOther\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eOther\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19D carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19D\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~10000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align:start\" align=\"start\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S810c4412600f451bac0c0d365e0b2448A.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"Z19D with Pin","offer_id":55441182556459,"sku":"14:10#Z19D with Pin","price":70.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Se88a323ca783414590a0e24c12f5828eT.webp?v=1788749946"},{"product_id":"winsen-mh-z19c-ndir-co2-gas-sensor-400-5000ppm-with-pins-terminals","title":"Winsen MH-Z19C NDIR CO2 Gas Sensor 400-5000ppm with Pins\/Terminals","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ewinsen\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDIY Supplies\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectrical\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eElectronic\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMH-Z19C\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eUART\/PWM\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSemi-finishedproduct\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eStyle\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003epin version\/terminal version\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNDIR CO2 sensor\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eMH-Z19C NDIR infrared gas module is a common type, small size sensor, pins type or terminal type, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature compensation; and it has UART output and PWM output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eHVAC refrigeration\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAir cleaner device\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eIndoor air quality monitoring\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSmart home\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eVentilation system School\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eChamber is gold plated\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eHigh sensitivity, low power consumption\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eGood stability\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eTemperature compensation, excellent linear output\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eMultiple output modes: UART, PWM\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eLong lifespan\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAnti-water vapor interference, anti-poisoning \u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003e Model No.\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eMH-Z19C\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eDetection gas\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eCO2\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eWorking Voltage\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e5.0±0.1V DC\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eAverage Current\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u0026lt;40mA (@5V power supply)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003ePeak Current\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e125mA (@5V power supply)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eInterface Level\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e3.3V (Compatible with 5V)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eDetection range\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e400~10000ppm (optional)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp\u003eOutput Signal\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eSerial Port (UART) (TTL level 3.3V)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cp\u003ePWM\u003c\/p\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003ePreheat Time\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e1 min\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eResponse Time\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eT90 \u0026lt;120s\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eWorking Temperature\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e-10 ~ 50℃\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eWorking Humidity\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e0 ~95% RH (No condensation)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eStorage Temperature\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e-20~60 ℃\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eWeight\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e5g\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eLife Span\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u0026gt;10 years\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp style=\"color:red\"\u003e* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e* For order discount or bulk purchase, please consult online customer service or send email to \u003c\/strong\u003e\u003cstrong\u003emax@winsensor.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"23818125\" type=\"custom\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"400-2000ppm-Pins \/ 10pcs","offer_id":55441183244587,"sku":"14:350686#400-2000ppm-Pins;200116262:202638841","price":907.79,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-Pins \/ 2pcs","offer_id":55441183277355,"sku":"14:350686#400-2000ppm-Pins;200116262:202638836","price":214.43,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-Pins \/ 1pc","offer_id":55441183310123,"sku":"14:350686#400-2000ppm-Pins;200116262:202638835","price":108.5,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-Pins \/ 50pcs","offer_id":55441183342891,"sku":"14:350686#400-2000ppm-Pins;200116262:202637878","price":4402.76,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-Pins \/ 10pcs","offer_id":55441183375659,"sku":"14:350850#400-5000ppm-Pins;200116262:202638841","price":907.79,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-Pins \/ 2pcs","offer_id":55441183408427,"sku":"14:350850#400-5000ppm-Pins;200116262:202638836","price":214.43,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-Pins \/ 1pc","offer_id":55441183441195,"sku":"14:350850#400-5000ppm-Pins;200116262:202638835","price":99.86,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-Pins \/ 50pcs","offer_id":55441183473963,"sku":"14:350850#400-5000ppm-Pins;200116262:202637878","price":4402.76,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-cable \/ 10pcs","offer_id":55441183506731,"sku":"14:350852#400-2000ppm-cable;200116262:202638841","price":907.79,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-cable \/ 2pcs","offer_id":55441183539499,"sku":"14:350852#400-2000ppm-cable;200116262:202638836","price":214.43,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-cable \/ 1pc","offer_id":55441183572267,"sku":"14:350852#400-2000ppm-cable;200116262:202638835","price":99.86,"currency_code":"USD","in_stock":false},{"title":"400-2000ppm-cable \/ 50pcs","offer_id":55441183605035,"sku":"14:350852#400-2000ppm-cable;200116262:202637878","price":4402.76,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-cable \/ 10pcs","offer_id":55441183637803,"sku":"14:350853#400-5000ppm-cable;200116262:202638841","price":907.79,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-cable \/ 2pcs","offer_id":55441183670571,"sku":"14:350853#400-5000ppm-cable;200116262:202638836","price":214.43,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-cable \/ 1pc","offer_id":55441183703339,"sku":"14:350853#400-5000ppm-cable;200116262:202638835","price":99.86,"currency_code":"USD","in_stock":false},{"title":"400-5000ppm-cable \/ 50pcs","offer_id":55441183736107,"sku":"14:350853#400-5000ppm-cable;200116262:202637878","price":4402.76,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S7ac6e517b10f4e13a20d060601bf0cd2N.webp?v=1788749949"},{"product_id":"mh-z1911a-ndir-co2-module-indoor-environmental-control-400-10000ppm-optional-air-quality-monitor","title":"MH-Z1911A NDIR CO2 Module Indoor Environmental Control 400~10000ppm Optional Air Quality Monitor","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eWinsen\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cspan style=\"background-color:rgb(252, 196, 0)\"\u003e\u003cstrong\u003eMH-Z1911A is a newer version of MH-Z19B\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eHVAC system\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAir purifier\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAir quality monitor\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eConsumer CO2 meter\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSmart home device\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eSmart building automation\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eIndoor environmental control\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eHigh sensitivity, low power consumption\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eGood stability and consistency\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eTemperature compensation, excellent linear output\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eMultiple output modes: UART, PWM\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eLong lifespan\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eAnti-water vapor interference, anti-poisoning\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eModel No.\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eMH-Z1911A\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003ePreheat time\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e1 min\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eDetection Gas\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eCO2\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eResponse Time\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eT90 \u0026lt;120s\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eWorking voltage\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eDC 5.0±0.1V\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eWorking temperature\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e-10 ~ 50 ℃\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eAverage current\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u0026lt;30mA (@5V power supply)\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eWorking humidity\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e0~95%RH(No condensation)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003ePeak current\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e125mA (@5V power supply)\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eStorage temperature\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e-20~60 ℃\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003eInterface level\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e3.3 V(Compatible with 5V)\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eWeight\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e5 g\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp\u003eOutput signal\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eDetection Range\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e400~10000ppm(optional,see table2.)\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp\u003ePWM\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003eLifespan\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u0026gt;10 years\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_dynamic\"\u003e\u003ckse:widget data-widget-type=\"customText\" id=\"1005000003531210\" type=\"custom\"\u003e\u003c\/kse:widget\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Ter 400-2000 ppm","offer_id":55441183801643,"sku":"14:366#Ter 400-2000 ppm","price":70.38,"currency_code":"USD","in_stock":false},{"title":"Ter 400-5000 ppm","offer_id":55441183834411,"sku":"14:200005536#Ter 400-5000 ppm","price":70.38,"currency_code":"USD","in_stock":false},{"title":"Pin 400-10000ppm","offer_id":55441183867179,"sku":"14:173#Pin 400-10000ppm","price":70.38,"currency_code":"USD","in_stock":false},{"title":"Pin 400-2000 ppm","offer_id":55441183899947,"sku":"14:10#Pin 400-2000 ppm","price":70.38,"currency_code":"USD","in_stock":false},{"title":"Pin 400-5000 ppm","offer_id":55441183932715,"sku":"14:29#Pin 400-5000 ppm","price":70.38,"currency_code":"USD","in_stock":false},{"title":"Ter 400-10000ppm","offer_id":55441183965483,"sku":"14:200006154#Ter 400-10000ppm","price":70.38,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S95a8d53e4781411fbde53eaefd369ebf2.webp?v=1788749950"},{"product_id":"mh-z1911a-ndir-co2-carbon-dioxide-infrared-gas-sensor-module-400-10000ppm-for-co2-monitor-mh-z19","title":"MH-Z1911A NDIR CO2 Carbon Dioxide Infrared Gas Sensor Module 400-10000ppm for CO2 Monitor MH-Z19","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication Scenarios\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCivilian Grade \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBattery Included\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eno\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYour Cee\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDIY Supplies\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectrical\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eFeature 1\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor Module CO2 Monitor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eFeature 2\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHigh Sensitivity Low Power Consumption\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eGas Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCo2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMeasurement Range\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e400~10000ppm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMH-Z1911A Infrared co2 Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePCBincluded\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSemi-finishedproduct\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eWith LCD Screen Or Not\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A infrared CO2 sensor is intelligent sensor with small size, using non-dispersive infrared (NDIR) principle to detect the concentration of CO2 in the air of buildings such as office, home, classroom, airport installed in air quality meters, air purifier and HVAC system. It has excellent selectivity carbon dioxide, built-in temperature compensation for high accuracy, lower power consumption and optional output ways of UART and PWM. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHVAC system\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir purifier\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAir quality monitor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eConsumer CO2 meter\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart home device\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSmart building automation\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eIndoor environmental control\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;list-style:disc;box-sizing:border-box' align=\"start\"\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eGood stability and consistency\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMultiple output modes: UART, PWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eLong lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, anti-poisoning\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(34, 34, 34);box-sizing:border-box' align=\"start\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv style='font-family:\"TT Norms Pro\", \"Open Sans\", Roboto, Arial, Helvetica, sans-serif, SimSun;font-size:14px;font-weight:400;letter-spacing:normal;white-space:normal;color:rgb(34, 34, 34);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003ctable style=\"border-collapse:collapse\" border=\"1\" cellpadding=\"10\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eModel No.\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eMH-Z1911A\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePreheat time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e1 min\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Gas\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eCO2\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eResponse Time\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eT90 \u0026lt;120s\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking voltage\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDC 5.0±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-10 ~ 50 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eAverage current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e\u0026lt;30mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWorking humidity\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e0~95%RH(No condensation)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003ePeak current\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e125mA (@5V power supply)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eStorage temperature\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e-20~60 ℃\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eInterface level\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e3.3 V(Compatible with 5V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e5 g\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\"\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eOutput signal\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eSerial Port (UART)(TTL level 3.3V)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003eDetection Range\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='font-size:24px;font-family:\"times new roman\", times, serif'\u003e400~10000ppm(optional,see table2.)\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cp style=\"line-height:inherit;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box\"\u003e\u003cspan style='color:rgb(34, 34, 34);font-size:24px;font-family:\"times new roman\", times, serif'\u003ePWM\u003c\/span\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sb0cca2aea8f446eb8f3ec6ea73a8d4c0Z.png\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1fea40023a0447c4bf7a8410ef666a52J.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S6bb8ec5f9ae0446fadeee154bf8d00a9I.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4d259ca1a0c449ea94ff5708473b4c5ev.png\" slate-data-type=\"image\"\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S3557cbe5a39a41608a8cac814bb50f3eS.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd47680c445d94f0db8c9884a5642c28ff.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"MH-Z1911A cable","offer_id":55441185866027,"sku":"14:200021498#MH-Z1911A cable","price":2.57,"currency_code":"USD","in_stock":false},{"title":"with pin","offer_id":55441185898795,"sku":"14:29#with pin","price":41.09,"currency_code":"USD","in_stock":false},{"title":"terminal cable","offer_id":55441185931563,"sku":"14:496#terminal cable","price":41.09,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Saa99f19dc2ad4e92b9a22beb769999008.webp?v=1788749954"},{"product_id":"mh-z19e-winsen-co2-sensor-ndir-co2-module-high-sensitivity-low-power-consumption-uart-pwm-output-infrared-gas-sensor","title":"MH-Z19E Winsen CO2 Sensor NDIR CO2 Module High Sensitivity, Low Power Consumption UART, PWM Output Infrared Gas Sensor","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eApplication Scenarios\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCivilian Grade \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBattery Included\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eno\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYour Cee\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDIY Supplies\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eElectrical\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eGas Sensor\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInductance Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eGas Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCo2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMH-Z19 MH-Z19E IR Infrared CO2 Sensor Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCarbon Dioxide Gas Sensor NDIR for CO2 Monitor 400-5000ppm UART PWM Output MH Z19E\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMH-Z19E MH-Z19 CO2 Sensor Module\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCarbon Dioxide Gas Sensor for CO2 Monitor 400-5000ppm UART PWM Output\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMeasurement Range\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMH-Z19E CO2 Sensor Module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePCBincluded\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSemi-finishedproduct\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eWith LCD Screen Or Not\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct Details:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eThe MH-Z19E MH-Z19D carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor. It has two products: pin and terminal. It uses the principle of non-dispersive infrared (NDIR) to detect CO2 in the air and has good selectivity. , No oxygen dependence, long life, etc.; built-in temperature compensation; also has serial port output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with precise optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSensor characteristics:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHigh sensitivity, low power consumption\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eExcellent stability\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eTemperature compensation, excellent linear output\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProvide serial port (UART), PWM waveform and other output methods\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003elong lasting\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAnti-water vapor interference, no poisoning\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eHVAC equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir quality monitoring equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eFresh air system\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAir purification equipment\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSmart home\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eschool\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cstrong\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eProduct model: MH-Z19E\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC(5.0±0.1)V\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003ePeak current: 125 mA (@5V power supply)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eInterface level: 3.3V (compatible with 5V)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eMeasuring range: 400~5000ppm optional\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eOutput signal: serial port (UART) (TTL level 3.3V); PWM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eResponse time: T90 \u0026lt;120s\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking temperature: -10℃～50℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eStorage temperature: -20℃～60℃\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking humidity: 0～95%RH (non-condensing)\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S37150b5a6066478588c5f2bb5bc478b9k.png\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/S01710ced0cfd4b238f47a9878282087aY.png\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"center\"\u003e\n\u003cimg style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box' width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/H4bd57272ddd9438f99a138998199d8982.png\" slate-data-type=\"image\"\u003e\u003cimg style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box' width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/H92f6965ffd144cffba694c31288f4673Y.png\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\n\u003cdiv style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:content-box' align=\"start\"\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg style='font-family:\"Open Sans\", sans-serif;font-size:14px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;max-width:100%;box-sizing:border-box' width=\"750\" height=\"auto\" src=\"https:\/\/ae01.alicdn.com\/kf\/Hbde2afbf88bb4af1b75d3f5662a8899dX.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp style='font-family:\"Open Sans\", Arial, Helvetica, sans-serif, Heiti;font-size:14px;font-weight:400;letter-spacing:normal;line-height:inherit;text-align:center;white-space:normal;color:rgb(0, 0, 0);background-color:rgb(255, 255, 255);margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;padding:0px;padding-bottom:0px;padding-top:0px;padding-left:0px;padding-right:0px;box-sizing:border-box' align=\"center\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H0258293f8dea4c1b9a5917d139073ee2W.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H0c0d720e710d4b70a9337b9986659684z.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H664fda91ac7e4290b0035c594486e9d8Z.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Z19E with Pin","offer_id":55441195860267,"sku":"14:29#Z19E with Pin","price":64.98,"currency_code":"USD","in_stock":false},{"title":"Z19E with Cable","offer_id":55441195893035,"sku":"14:496#Z19E with Cable","price":58.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/H0258293f8dea4c1b9a5917d139073ee2W.webp?v=1788749990"},{"product_id":"infrared-carbon-dioxide-sensor-mh-z19b-mh-z19c-air-quality-monitoring-co2-detection","title":"Infrared carbon dioxide sensor MH-Z19B MH-Z19C Air quality monitoring \/CO2 detection","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMixture\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDigital Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eGas Sensor\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eMH-Z19 Carbon dioxide gas sensor (hereinafter referred to as the sensor) a general purpose, small sensor, using non-dispersive infrared (NDIR) principle to detect the presence of C0z in the air, with good selectivity, no oxygen dependence, long life. Built-in temperature compensation; Digital output and waveform output at the same time, easy to use. The sensor combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design to produce high performance sensor\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eProduct model: MH-Z19B\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eLife span: \u0026gt;5 years\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eInterface level: 3.3V\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003ePreheating time: 3min\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eAverage current: \u0026lt;18mA\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eDetected gas: Carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eOperating voltage: 3.6~5.5VDC\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eSensor features: Provide LART, PWM waveform and other output modes long service life, excellent stability, anti-water vapor interference, no poisoning, temperature compensation, excellent linear output high sensitivity, high frequency, low power consumption\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eResponse time: T90\u0026lt;60s\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eOperating temperature: 0~50℃\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eOutput signal: UART PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eWorking humidity: 0~95%RH(non-condensing)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eOverall dimensions: 33mmX20mmX9mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eMeasurement range: 0 to 0.5%Vol This parameter is optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cspan style='font-family:\"Times New Roman\", Times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style=\"background-color:rgb(255, 255, 255)\"\u003eMain applications: Can be widely used in HVAC refrigeration and indoor air refrigeration monitoring.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003cimg cke-id=\"img39\" data-id=\"ckeditor_img34\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S529f66bde4174a9c9071d13543e4de2ar.jpg\"\u003e\u003cimg cke-id=\"img40\" data-id=\"ckeditor_img35\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S5c35e67d97d8444bb7e1f1b2d8812414Q.jpg\"\u003e\u003cimg cke-id=\"img41\" data-id=\"ckeditor_img36\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S82e74eebe539435b904c33d63a0ca9ecf.jpg\"\u003e\u003cimg cke-id=\"img42\" data-id=\"ckeditor_img37\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sf6f9338f52cf4490b6b80306768f1cf2D.jpg\"\u003e\u003cimg cke-id=\"img43\" data-id=\"ckeditor_img38\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S349fd81c3d13465abe49e962a6bf27666.jpg\"\u003e\u003cimg cke-id=\"img44\" data-id=\"ckeditor_img39\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S4d22b8f86476486080df2cef110a54c92.jpg\"\u003e\u003cimg cke-id=\"img45\" data-id=\"ckeditor_img40\" referrerpolicy=\"no-referrer\" slate-data-type=\"image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S39b873f0b24c4f2ebe39ef52ce0c8b6aW.jpg\"\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cbr\u003e\n \u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Yoeruyo","offers":[{"title":"MH-Z19B with pin","offer_id":55441269129515,"sku":"14:29#MH-Z19B with pin","price":101.48,"currency_code":"USD","in_stock":false},{"title":"MH-Z19B with Termina","offer_id":55441269162283,"sku":"14:175#MH-Z19B with Termina","price":156.2,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with Termina","offer_id":55441269195051,"sku":"14:173#MH-Z19C with Termina","price":156.2,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C with pin","offer_id":55441269227819,"sku":"14:10#MH-Z19C with pin","price":101.48,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S12f6682d7582484b8f0e7c9dae2f14e71.webp?v=1788751142"},{"product_id":"mh-z19-mh-z19c-mh-z19b-mh-z19e-ir-infrared-co2-sensor-module-carbon-dioxide-gas-sensors-ndir-co2-monitor-400-5000-0-5000ppm-uart-3","title":"MH-Z19 MH-Z19C MH-Z19B MH-Z19E IR Infrared CO2 Sensor Module Carbon Dioxide Gas Sensors NDIR CO2 Monitor 400-5000 0-5000ppm UART","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eVoltage Regulator\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 36pt; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-family: 'times new roman', times, serif;\" data-spm-anchor-id=\"a2g0o.detail.1000023.i0.36efNhAuNhAutN\"\u003eCarbon dioxide gold shell (non-MH-Z19)400-5000PPM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S80757629c8634a1b8ddc6aef69f9a92eN.png\" alt=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 36pt; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-family: 'times new roman', times, serif;\" data-spm-anchor-id=\"a2g0o.detail.1000023.i0.36efNhAuNhAutN\"\u003e\u003cspan style=\"font-family: times new roman, times, serif;\"\u003e\u003cspan style=\"font-size: 48px;\"\u003eCarbon dioxide white shell (non-MH-Z19) 400-5000PPM\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4f83144439934d08855f6ae6760c6c25N.png\" alt=\"image\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\" data-spm-anchor-id=\"a2g0o.detail.1000023.i0.36efNhAuNhAutN\"\u003eThe MH-Z19C carbon dioxide gas sensor (hereinafter referred to as the sensor) is a general-purpose intelligent small sensor that uses the principle of non-dispersive infrared (NDIR) to detect the presence of C02 in the air. And other features; built-in temperature compensation: simultaneously has serial output, PWM output, easy to use. The sensor is a high-performance sensor made by closely combining mature infrared absorption gas detection technology with sophisticated optical circuit design and sophisticated circuit design.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eProduct parameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eDetection gas: carbon dioxide\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePower supply voltage: DC (5.0 ± 0.1) V\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eAverage current: \u0026lt;40mA (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePeak current: 125 to (@5V power supply)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eInterface level: 3. 3v (compatible with 5v)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eMeasuring range: 400-5000PPM optional\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eOutput signal: serial UART (TL level 3.3V)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eWarm-up time: 1min\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eResponse time: T90\u0026lt; 120s\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eWorking temperature: -10-50degree\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eWorking humidity: 0~95%RH (no condensation)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePin description:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eVin: Power +(in)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eGND: power supply-(GND)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePWM: PWM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eHd: HD (zero calibration, low level is effective for more than 7 seconds)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eRx: UART (RXD) TTL level data input\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eTx: UART (TXD) TTL level data output\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eOutput method:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; color: #c00000; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePWM output\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eAssume the measurement range is 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eCO2: Concentration output range: 400-2000ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePeriod: 1004ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eHigh level output at the beginning of the cycle: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eCentral period: 1000ms±5%\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eLow level output at the end of the period: 2ms (theoretical value)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eCalculation formula for obtaining current CO2 concentration value by PWM: Cppm=2000X (TH-2ms)\/(TH+TL-4ms)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eCppm: CO2 concentration value calculated by the unit of ppm\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eTH: the time when the output is high level in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eTL: the time when the output is low in one output cycle\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; text-align: center; background-color: #ffffff; border: 0px;\" align=\"center\"\u003e\u003cimg style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; border: none; margin: 0px; padding: 0px; font-family: inherit; font-size: 0px; font-weight: inherit; line-height: inherit; color: transparent;\" src=\"https:\/\/ae01.alicdn.com\/kf\/S00d776a10e10458b83ba3e72768f1f6eM.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; color: #c00000; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eSerial output (UART)\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003eHardware connection, connect the sensor's Vin-GND-RXD-TXD to the user's 5V-GND-TXD-RXD. (User terminal must use TTL level)\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; text-align: center; background-color: #ffffff; border: 0px;\" align=\"center\"\u003e\u003cimg style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; border: none; margin: 0px; padding: 0px; font-family: inherit; font-size: 0px; font-weight: inherit; line-height: inherit; color: transparent;\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se3fa572ea4494032b25159429cab9c690.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e \u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003ePrecautions:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e1. In the process of welding, installation and use of the sensor, the gold-plated plastic cavity should be prevented from withstanding pressure in any direction.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e2. If the sensor needs to be placed in a small space, this space should be well ventilated, especially the two diffusion windows should be in a well ventilated position.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e3. The sensor should be far away from the heat source, and avoid direct sunlight or other heat radiation.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e4. The sensor should be calibrated regularly, and the calibration period is recommended to be no more than 6 months.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e5. Do not use the sensor for a long time in the environment with high dust density.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e6. In order to ensure that the sensor can work normally, the power supply voltage must be maintained at (5.0 ± 0.1) VDC. The power supply current must not be less than 150mA\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e7. If it is not within this range, the sensor may be faulty, the output concentration of the sensor is low or the sensor cannot work normally.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e8. When manually calibrating the zero point or sending the command to calibrate the main points, it must be stable\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e9. Work continuously for more than 20 minutes in a gas environment (400ppm).\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e10. The sensor is prohibited to use wave peak depth.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e11. When welding with iron, set the temperature to (350±5) degree, early\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e12. The pick-up time must be less than 35.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e13. When using the sensor, it is recommended that the customer use the method of inserting the solder bump to directly insert and remove the sensor for toilet maintenance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"box-sizing: content-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; font-family: 'open sans', sans-serif; line-height: inherit; background-color: #ffffff; border: 0px;\" align=\"start\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: 20px; font-family: inherit;\"\u003e\u003cspan style=\"box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; max-width: 100%; word-break: break-word; font-size: inherit; font-family: 'times new roman', times, serif;\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Scf57b1b0783a49bf95e597bde37b3da6G.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S6ce2da658da44be480eb097cee0a072bX.png\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\r\n","brand":"Yoeruyo","offers":[{"title":"CO2 Sensor Module","offer_id":55441272471851,"sku":"14:350852#CO2 Sensor Module","price":42.84,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C","offer_id":55441272504619,"sku":"14:4044226#MH-Z19C","price":96.08,"currency_code":"USD","in_stock":false},{"title":"CO2 Sensor Module 1","offer_id":55441272537387,"sku":"14:351074#CO2 Sensor Module","price":54.32,"currency_code":"USD","in_stock":false},{"title":"MH-Z19C 1","offer_id":55441272570155,"sku":"14:201659813#MH-Z19C","price":96.08,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S5b66deda95154dc48c038927008bfb26B.webp?v=1788751149"}],"url":"https:\/\/yoeruyo.com\/collections\/mh-z19-mhz19b.oembed","provider":"Yoeruyo","version":"1.0","type":"link"}