Feature: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, PM2.5, 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.Specification:.Item Type: Air Quality Sensor ModuleProduct Model: M702B UOutput Method: UART protocolPhysical Interface: XH2.54 female socketWorking Voltage: 5.0VDCWorking Current: 80mAWorking Temperature: 0-50Working 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 ItemMeasurement RangeAccuracyResolutionCO2400ppm-5000ppm25%1ppmCH200ug/m3-1000ug/m325%1ug/m3TVOC0ug/m3-2000ug/m325%1ug/m3PM2.50ug/m3-999ug/m310%1ug/m3PM100ug/m3-1000ug/m310%1ug/m3Temperature-40-1000.30.01Humidity0-100%3%RH0.04%Package List:1 x Air Quality Sensor Module1 x Data Cable