{"product_id":"3-in-1-atmospheric-temperature-humidity-barometric-pressure-sensor-transmitter-demo-set-range-0-120kpa-frs485-modbus-rtu","title":"3-in-1 Atmospheric Temperature Humidity Barometric Pressure Sensor Transmitter Demo Set Range 0-120kPa FRS485 Modbus RTU","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\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\"\u003eGauselink\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\u003eSemi-finishedproduct\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003e1. Product Parameters\u003c\/p\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e- Name: 3-in-1 Barometric Pressure, Temperature and Humidity Sensor\u003cbr\u003e- Model: GL-ATH30\u003cbr\u003e- Rated Voltage: 5 ~ 30V DC\u003cbr\u003e- Power: Less than 0.1W\u003cbr\u003e- Accuracy: \u003cbr\u003eBarometric Pressure ±0.15kPa @25℃ 101kPa \u003cbr\u003eHumidity ±3%RH（60%RH, 25℃）\u003cbr\u003eTemperature ±0.5℃ (25℃）\u003cbr\u003e- Range: 0 ~ 120kPa, -40℃ ~ 80℃, 0 ~ 100%RH\u003cbr\u003e- Output Port RS485\u003cbr\u003e- Communication Protocol: Modbus RTU\u003cbr\u003e- Baud Rate: 9600bits per second\u003cbr\u003e- Default Address: 0x01\u003cbr\u003e- Resolution: Humidity 0.1%RH, Temperature 0.1℃, Barometric Pressure 0.01kPa\u003cbr\u003e- Protection Level: Not water-proof (for indoor use only)\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7875b25ccd974b97a52a7d5ed375b4bad.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003e2. Attractive Features\u003c\/p\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.1 Sensor Calibrated Before Exwork\u003cbr\u003eThe temperature and humidity data of sensor are precisely calibrated before leaving factory. No calibration needed anymore before use.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1f20782470094f5d8be280f356365976S.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.2 Modbus RTU Protocol\u003cbr\u003eUnder Modbus RTU protocol, the temperature and humidity sensor can be connected to PC, MCU (Micro Controller Unit) and PLC for data communication.\u003cbr\u003eTo connect to PC, an RS485 to USB convertor is needed and included in one of the SKUs.\u003cbr\u003eTo connect to MCU and PLC, an RS485 to TTL\/232 convertor (not included) is needed.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1b660fb4f3d84edd9bb08ab0d40b9610C.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.3 Advanced Chip Embedded\u003cbr\u003e\u003cbr\u003eThe sensor is equipped with an advanced chip from Switzerland. It contributes to the precise and stable data measurement.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S32bd340a60164700afa461c4d5219a69B.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.4 Visible Communication - LED Indicator\u003cbr\u003eThe PCB bears a red LED indicator.\u003cbr\u003eWhen power on, the indicator is flashing slowly.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sebdc9962d9ae411a90a4827ea2bc4bf6B.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.6 Energy-Saving and Wide Range of Power Supply\u003cbr\u003e- The PCB of sensor is energy-saving. It consumes less than 0.1 Watt.\u003cbr\u003e- Power Supply can be DC 5~28V. This wide range provide more flexibility for users.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S8986f3f029d94919844fb92ef9421a45Y.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e2.7 One to One Technical Support\u003cbr\u003eTo contact sales assistant online for technical support, if necessary.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sd74c6a39b13d4dc1941a174531447ba9V.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003e3. Product Dimensions and Terminals Definition\u003c\/p\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eNote: Dimensions measured by hands may have small deviations.\u003cbr\u003e\u003cbr\u003eThe sensor box can be installed in standard DIN track (not included) or fixed by 2 screws (M3 recommended).\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7fc86bf0ded14748a9800ca155f3d954A.jpg\" slate-data-type=\"image\"\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S22e7402080cf4ccba5fe30131ce9173f4.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eTerminal Definnition:\u003cbr\u003e① RS485 A\u003cbr\u003e② RS485 B\u003cbr\u003e③ + Positive of Power (VCC) \u003cbr\u003e④ - Negative of Power (GND)\u003cbr\u003e⑤ Idle (Not Used)\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc568736abe61413ca914441d34824ca9S.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003e4.  Communication Protocol - Modbus TRU\u003c\/p\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e4.1 Basic Parameters\u003cbr\u003e- Baud Rate: 9600 bps\u003cbr\u003e- Data bit: 8\u003cbr\u003eStop bit: 1\u003cbr\u003e- Parity check: None\u003cbr\u003e- Verification: CRC-16\/Modbus\u003cbr\u003e- Read Code: 0x03 (0x indicates the data is hexadecimal)\u003cbr\u003e- Write Code: 0x06\u003cbr\u003e\u003cbr\u003e4.2 RS485 Modbus Protocol Format\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Se41ebf1d5acf4351a692b46055b245f2f.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eRS485 Modbus Register Definition\u003cbr\u003e\u003cbr\u003eNote: \"0x\" in the table indicates the address\/code are hexademical.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sa4a652dc088e494cb59efdb332a5bb43Y.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e4.3 Communication Examples\u003cbr\u003e\u003cbr\u003eTo read barometric pressure\u003cbr\u003eHost Sends: 01 03 00 04 00 01 31 84 (0x31 84 is the 16-bit CRC verification code)\u003cbr\u003eSensor (GL-ATH30) Replies: 01 03 02 27 3B A7 84\u003cbr\u003e2 bytes of pressure are 0x273B = 10043,\u003cbr\u003e10043 divided by 10 is the value in hPa and by 100 is the value in kPa.\u003cbr\u003eSo the barometric pressure is 100.43kPa.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eTo read humidity and temperature:\u003cbr\u003eHost Sends: 01 03 00 00 00 02 0B 94\u003cbr\u003eSensor Replies: 01 03 04 02 E0 01 1F 2C 07\u003cbr\u003e\u003cbr\u003e2 bytes of humidity are 0x02E0 = 736.\u003cbr\u003e736 divided by 10 comes the humidity value 73.6%RH.\u003cbr\u003e\u003cbr\u003e2 bytes of temperature are 0x011F= 287.\u003cbr\u003e287 divided by 10 comes the temperature value 28.7°C.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S65f681e8d3164fabae5a079e04418bddg.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eTo read Baud Rate:\u003cbr\u003eHost (TX): 01 03 07 D1 00 01\u003cbr\u003eClient (RX): 01 03 02 00 02\u003cbr\u003e\u003cbr\u003eTo read client address:\u003cbr\u003e\u003cbr\u003eHost (TX): 01 03 07 D0 00 01\u003cbr\u003eClient (RX): 01 03 02 00 01\u003cbr\u003e\u003cbr\u003eTo change client\/sensor address from 01 to 02:\u003cbr\u003eHost (TX): 01 06 07 D0 00 02\u003cbr\u003eClient (RX): 01 06 07 D0 00 02\u003cbr\u003e\u003cbr\u003eIf forgoten, the client address can be checked in this way. Use broadcast address OxFF as substitue and only 1 client is connected.\u003cbr\u003e\u003cbr\u003eHost (TX): FF 03 07 D0 00 01\u003cbr\u003eClient (RX): 02 03 02 00 02\u003cbr\u003eThe address is 0x02.\u003cbr\u003e \u003cbr\u003eRefer to the screenshot of Serial Port Tester below.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S907f3295b39147779c2007c0bc616151t.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eTemperature and Humidity Calibration\u003cbr\u003eThe register 0x0050 and 0x0051 are kept for customer if the temperature\/humidity value has to be adjusted. The default value is 0.\u003cbr\u003e\u003cbr\u003ee.g. \u003cbr\u003eTo offset the temperature by +2°C, you can set the value of register 0x0050 at 0x14.\u003cbr\u003eHost (TX): 01 06 0050 0014\u003cbr\u003eClient (RX): 01 06 0050 0014\u003cbr\u003e\u003cbr\u003eTo increase the humidity by +5%, you can set the value of register 0x0051 at 0x32.\u003cbr\u003eHost (TX): 01 06 0051 0032\u003cbr\u003eClient (RX): 01 06 0051 0032\u003cbr\u003e\u003cbr\u003eNote: Negative offset value shall be expressed in Two's Complement Notation. e.g. -2°C expressed as 0xFFEC.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:20px;font-weight:900;line-height:28px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-title\"\u003e5. Product Applicable Fields\u003c\/p\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003e1. Weather and typhoon forecast\u003cbr\u003e2. Air conditions monitoring in offices\u003cbr\u003e3. Barometric pressure measurement in high mountains\u003cbr\u003e4. Use barometric pressure to estimate the altitude of drone and plane\u003cbr\u003e5. Working conditions at electrical cabinets room\u003cbr\u003e6. Barometric pressure monitoring in pressurized room\u003cbr\u003e...\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"detailmodule_image\"\u003e\u003cimg style=\"margin-bottom:10px\" class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Se0f54e883a8d49868d95e913529fd3d38.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\u003cdiv class=\"detailmodule_text-image\"\u003e\n\u003cp style=\"font-family:OpenSans;font-size:14px;font-weight:300;line-height:20px;white-space:pre-wrap;color:rgb(0, 0, 0);margin-bottom:12px\" class=\"detail-desc-decorate-content\"\u003eBarometric pressure trend during typhoon weather\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6a9db4dfa13940d194ac18b6a98d5324l.jpg\" slate-data-type=\"image\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Demo Set","offer_id":55436558958891,"sku":"14:200003699#Demo Set","price":170.91,"currency_code":"USD","in_stock":true},{"title":"GL-ATH30 Sensor","offer_id":55436558991659,"sku":"14:29#GL-ATH30 Sensor","price":75.02,"currency_code":"USD","in_stock":true},{"title":"Sensor and Convertor","offer_id":55436559024427,"sku":"14:366#Sensor and Convertor","price":95.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sa0b3a47757af4a55b20baf68d8417d3cS.webp?v=1788668354","url":"https:\/\/yoeruyo.com\/products\/3-in-1-atmospheric-temperature-humidity-barometric-pressure-sensor-transmitter-demo-set-range-0-120kpa-frs485-modbus-rtu","provider":"Yoeruyo","version":"1.0","type":"link"}