{"product_id":"keyestudio-mq-series-sensor-gas-sensor-mq-2-mq-3-mq-5-mq-135-mq-6-mq-8-mq-7-module-for-arduino-sensor-diy-electronic-projec-1","title":"Keyestudio MQ Series Sensor Gas Sensor MQ-2 MQ-3  MQ-5 MQ-135  MQ-6 MQ-8  MQ-7 Module  for Arduino Sensor DIY Electronic Projec","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ekeyestudio\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\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\"\u003eGas 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\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThis analog gas sensor - MQ2 is used in gas leakage detecting equipment in consumer electronics and industrial markets.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThis sensor is suitable for detecting LPG, I-butane, propane, methane, alcohol, Hydrogen and smoke. It has high sensitivity and quick response.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eIn addition, the sensitivity can be adjusted by rotating the potentiometer. \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003ePower Supply: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eInterface Type: Analog\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eWide detecting scope\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eQuick response and High sensitivity\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSimple drive circuit\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStable and long lifespan\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sdf53bd9ceac646bb8de1e035d12644ffw.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S95cf66979f3740a2a5d15241f87d9db4e.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se8e7082113ea4530ae7630fac077ac3ee.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThis analog gas sensor - MQ3 is suitable for detecting alcohol. It can be used in a breath analyzer.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eIt has good selectivity because it has higher sensitivity to alcohol and lower sensitivity to Benzine.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe sensitivity can be adjusted by rotating the potentiometer.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003ePower Supply: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eInterface Type: Analog\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eQuick response and High sensitivity\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSimple drive circuit\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStable and long service life\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S6369078d014d43909f1fdff2c5f5eb951.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S700ba24a754d419081d18c9eb49e1e19L.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1f81fd8dacc04dd0bd00c2c6fa2e6ea0o.jpg\" slate-data-type=\"image\"\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eMQ-4 can be used in household and industrial-level gas leakage detection device to detect natural gas and methane.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eIt is featured with wide detection range, high sensitivity, fast response and recovery time, with excellent stability, long service life and simple drive circuit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eApplicable gas: natural gas, methane\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eDetection Range: 300 ~ 10000ppm\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eCharacteristic Gas: 5000ppm methane\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSensitivity: R in air\/R in typical gas≥5\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eResistance of Sensitive Material: 1KΩ～20KΩ in 5000ppm methane\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eResponse Time: ≤10s\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eRecovery Time: ≤30s\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Resistance: 31Ω±3Ω\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Current: ≤180mA\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Power: ≤900mW\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Voltage: 5.0V±0.2V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eMeasuring Voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf0bdba5689434169b98031f2db4a36fd9.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S95cf66979f3740a2a5d15241f87d9db4e.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se8e7082113ea4530ae7630fac077ac3ee.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe gas sensitive material used in MQ-5 gas sensor is SnO2, which is of lower electrical conductivity in clean air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eWhen there is combustible gas in the environment where sensor resides, the electrical conductivity of the sensor increases with the increase of the combustible gas concentration in the air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe sensitivity of MQ-5 gas sensor to propane, propane and methane is quite high, and the methane and propane can be well detected.\u003cbr\u003eThis sensor can detect a variety of combustible gases, especially natural gas, making it a low-cost sensor for a variety of applications.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Voltage (VH): AC or DC 5±0.5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOperating voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eLoad Resistance (RL): 2KΩ\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eResistance in Cleaning Air (Ra): ≤4000KΩ\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSensitivity (S=Ra\/Rdg): ≥4(in 1000ppmC4H10)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eResponse Time (tres): ≤ 10S\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eRecovery Time (TREC): ≤ 30S\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eDetection Range: 50-10000ppm\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S650346fd33ac4ce1920b0572017f2b7bA.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sbbbf08982fde440286a946576fe011f97.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S95cf66979f3740a2a5d15241f87d9db4e.jpg\" slate-data-type=\"image\"\u003e\u003cimg width=\"944\" height=\"944\" src=\"https:\/\/ae01.alicdn.com\/kf\/S5ed7a0fd0d9d44d380596d5c174ed360v.jpg\" slate-data-type=\"image\"\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe gas sensitive material used in MQ-6 gas sensor is SnO2, which is of lower electrical conductivity in clean air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eWhen there is combustible gas in the environment where sensor resides, the electrical conductivity of the sensor increases with the increase of the combustible gas concentration in the air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe sensitivity of MQ-6 gas sensor to propane, butane and liquefied petroleum gas is quite high, and the natural gas can also be well detected.\u003cbr\u003eThis sensor can detect a variety of combustible gases, making it a low-cost sensor for a variety of applications.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eProduct model: MQ-6\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTarget gas: liquefied gas, iso-butane, propane, LPG\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eDetectable concentration: 300-10000ppm (propane, butane and liquefied gas)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOperating voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating voltage: VH 5.0V±0.2V ACorDC\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eLoad resistance: RL adjustable\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating resistance: RH 31Ω±3Ω(Room temperature)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating power: ≤900mW\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eConcentration slope: α ≤0.6(R2000ppm\/R1000ppm LPG)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTemperature; humidity: 20℃±2℃；65%±5%RH\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStandard test circuit: Vc:5.0V±0.1V；VH: 5.0V±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003ePreheat time: ≧ 48H\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se3faa643cfc845809bbceea3cd11770dl.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S95cf66979f3740a2a5d15241f87d9db4e.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5ed7a0fd0d9d44d380596d5c174ed360v.jpg\" slate-data-type=\"image\"\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe gas sensitive material used in MQ-7 gas sensor is SnO2, which is of lower electrical conductivity in clean air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eIt detects carbon monoxide with low temperature (heated by 1.5V) through high-low temperature cycles.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe electrical conductivity of the sensor increases with the increase of the carbon monoxide concentration in the air. The change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe sensitivity of MQ-7 gas sensor to carbon monoxide is quite high, so it can be used to detect various gas containing carbon monoxide. It is a low-cost sensor suitable for a variety of applications.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTarget Gas: carbon monoxide\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eDetectable Concentration: 300-10000ppm CO\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOperating voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Voltage VH: 5.0V±0.2V ACorDC(hight); 1.5V±0.1V ACorDC(low)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eLoad Resistance RL: adjustable\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Resistance RH: 31Ω±3Ω(Room temperature)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating Power PH: ≤350mW\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSurface Resistance of Sensitive Material R: 2KΩ-20KΩ(in100ppmCO)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSensitivity S: Rs(in air)\/Rs(100ppmCO)≥5\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eConcentration Slope: α ≤0.6(R300ppm\/R100ppm CO)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTemperature, Humidity: 20℃±2℃ ; 65%±5%RH\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStandard Test Circuit: Vc:5.0V±0.1V; VH(high): 5.0V±0.1V; VH(low): 1.5V±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf89eae9e6657469786a905d8c272c43fw.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf36cfe06b4d347e494c16f3d385c8bfff.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S31baf9494ceb4b26843eacb5d4da130dw.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe gas sensitive material used in MQ-8 gas sensor is SnO2, which is of lower electrical conductivity in clean air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eWhen there is hydrogen in the environment where sensor resides, the electrical conductivity of the sensor increases with the increase of the hydrogen concentration in the air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe change of electrical conductivity can be converted to the output signal corresponding to that of the gas concentration by using a simple circuit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThe sensitivity of MQ-8 gas sensor to hydrogen is quite high, it can also detect a variety of other gases containing hydrogen.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eThis sensor is suitable for a variety of applications, is definitely a good catch.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eDetectable concentration: 100-1000ppm (hydrogen)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOperating voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating voltage VH: 5.0V±0.1V AC or DC\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eLoad resistance RL: adjustable\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating resistance RH: 29±3Ω(Room temperature)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeating power: PH ≤900mW\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSensitivity S: Rs(in air)\/Rs(1000ppm H2)≥5\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOutput voltage Vs: 2.5-4.0V（1000ppm H2）\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eConcentration slope: α≤0.6(R1000ppm\/R400ppm H2)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTemperature ; humidity: 20℃±2℃；55%±5%RH\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStandard test circuit: Vc:5.0V±0.1V；VH: 5.0V±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf89eae9e6657469786a905d8c272c43fw.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S95cf66979f3740a2a5d15241f87d9db4e.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se8e7082113ea4530ae7630fac077ac3ee.jpg\" slate-data-type=\"image\"\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eMQ135 adopts SnO2 as its gas sensitive material because SnO2 has low electrical conductivity in the clean air.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSo when surrounded by polluted air, the electrical conductivity of MQ135 will increase with the increase of pollutants, and the change in electrical conductivity can be converted to corresponding output signal.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eMQ135 has a high sensitivity to Ammonia, sulfide, benzene vapor, smoke and other harmful gas.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eIt can detect various harmful gases, making it a cost-effective choice suitable for multiple applications.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSpecification\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eProduct model: MQ135\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eProduct type: Semiconductor gas sensor\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eTarget gas: Ammonia; methylbenzene; hydrogen\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eOperating voltage: 5V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeater voltage: VH 5.0V±0.2V AC or DC\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eLoad resistance: Adjustable RL\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eHeater power consumption: PH ≤900mW\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eSensitivity: S Rs(in air)\/Rs(100ppmNH3)≥5\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eConcentration slope: α ≤0.6 (R100ppm\/R50ppm NH3)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStandard testing temperature\/humidity: 20℃±2℃\/65%±5%RH\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003eStandard testing circuit: Vc:5.0V±0.1V; VH: 5.0V±0.1V\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style='font-size:18px;font-family:\"times new roman\", times, serif'\u003ePreheating time: ≧48H\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5827b4711f1f4fe3984ddd7cb973251d7.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S017e3d80f4964d02844dd128e5e29dedW.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S2c58a2327c18456a955a7ae7b285a98bQ.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S340b30c8e0754edea949071448c99544u.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e","brand":"Yoeruyo","offers":[{"title":"MQ-2","offer_id":55441006821675,"sku":"14:10#MQ-2","price":20.48,"currency_code":"USD","in_stock":true},{"title":"MQ-3","offer_id":55441006854443,"sku":"14:29#MQ-3","price":20.12,"currency_code":"USD","in_stock":true},{"title":"MQ-4","offer_id":55441006887211,"sku":"14:173#MQ-4","price":20.43,"currency_code":"USD","in_stock":true},{"title":"MQ-5","offer_id":55441006919979,"sku":"14:175#MQ-5","price":20.61,"currency_code":"USD","in_stock":true},{"title":"MQ-6","offer_id":55441006952747,"sku":"14:193#MQ-6","price":20.21,"currency_code":"USD","in_stock":true},{"title":"MQ-7","offer_id":55441006985515,"sku":"14:366#MQ-7","price":20.48,"currency_code":"USD","in_stock":true},{"title":"MQ-8","offer_id":55441007018283,"sku":"14:496#MQ-8","price":20.61,"currency_code":"USD","in_stock":true},{"title":"MQ-135","offer_id":55441007051051,"sku":"14:365458#MQ-135","price":20.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S1e4e1a2390174e74af0d270496a6ec18V_8853f349-c7ec-4849-ae7a-a476d9ac5ef6.webp?v=1788748455","url":"https:\/\/yoeruyo.com\/products\/keyestudio-mq-series-sensor-gas-sensor-mq-2-mq-3-mq-5-mq-135-mq-6-mq-8-mq-7-module-for-arduino-sensor-diy-electronic-projec-1","provider":"Yoeruyo","version":"1.0","type":"link"}