1、Integrated Sensor: Air quality sensor module, integrating laser dust sensor, infrared CO2 sensor, electrochemical CH20 sensor, VOC sensor, temperature and humidity sensor. 2、Air Measurement: Can accurately measure the concentration of various gases in the air, with UART (TTL level) communication interface, used in smart homes, etc. 3、7 Sets Output Data: Simultaneous output of carbon dioxide, formaldehyde, TVOC, PM5, PM10, temperature and humidity, a total of 7 sets of data, convenient and durable. 4、High Performance: The air quality sensor module has high sensitivity and accuracy, stable data measurement, high efficiency and good reliability. 5、Automatic Output: Automatically output seven sets of sensor monitoring data through UART signal every 2 seconds, easy operation and less interference. 1 x Air Quality Sensor Module1 x Data Cable Item Type: Air Quality Sensor ModuleProduct Model: M702B UOutput Method: UART protocolPhysical Interface: XH 2.54 female socketWorking Voltage: 5.0VDCWorking Current: ≤80mAWorking Temperature: 0-50℃Working Humidity: ≤95%RHPreheating Time: 2 minutes (only CO2, CH20 and TVOC need to be preheated, other parameters can be displayed after power on)Service Life: 5 years (in air) Measurement Item Measurement Range Accuracy Resolution CO2 400ppm-5000ppm ±25% 1ppm CH20 0ug/m3-1000ug/m3 ±25% 1ug/m3 TVOC 0ug/m3-2000ug/m3 ±25% 1ug/m3 PM 2.5 0ug/m3-999ug/m3 ±10% 1ug/m3 PM10 0ug/m3-1000ug/m3 ±10% 1ug/m3 Temperature -40℃-100℃ ± 0.3℃ 0.01℃ Humidity 0-100% ±3%RH 0.04%