Features 1.[DETECTABLE GAS] The air quality sensor module can be used to detect VOC, eCO2, HCHO gas, with low power consumption. 2.[ACCURATE MEASURING] The gas sensor module has high sensitivity and quick response speed, and a wide measurement range. 3.[HIGH PERFORMANCE] With good consistency, no calibration, low electromagnetic interference, high resistance to shock and vibration. 4.[REAL TIME DETECTION] Real time detection of the environment, and output data through a certain protocol format, easy to use. 5.[WIDE APPLICATIONS] Used for portable meters, air quality monitoring equipment, ventilation systems and smart home equipment, etc. Specification Item Type: Gas Sensor Module Material: PCB Uses: Portable meters, car systems, air quality monitoring equipment, air purifiers, fresh air ventilation systems, air conditioners, smart home equipment, etc. Working Voltage: DC3.3V Working Current: <40mA Working Environment: Working temperature 0-70℃ Working Humidity: 15%-95%RH Communication Method: Serial port TTL level output (active reading mode and passive reading mode can be set by instructions) Warm Up Time: ≤5min Service Life: 3 years (in air) Product Size: Approx. 18 x 15mm / 0.7 x 0.6in Detection Gas: VOC, eCO2, HCHO Measuring Gas Measurement Resolution Measuring Range Measurement Accuracy eCO2 1ppm 400-5000ppm ± 100ppm TVOC 1ppb 0-1000ppb ± 75ppb CH2O 1ppb 0-400ppb ± 30ppb Pin Name Description 1 NC Not Connected 2 TX Serial TTL Transmitter 3 RX Serial TTL Receiver 4 GND GND 5 NC Not Connected 6 NC Not Connected 7 NC Not Connected 8 NC Not Connected 9 3.3V DC3.3V Input 10 NC Not Connected Package List 1 x Gas Sensor Module