Features: 1The 7?in?1 sensor module is a comprehensive air quality sensor that integrates CO2, laser dust, temperature and humidity, TVOC and formaldehyde. 2Can detect the environment in real time, and output data through a certain protocol format, which is easy to use and has good stability. 3With RS485 output, using British original chip, high sensitivity and stable. 4Compact size, easy to carry and store, convenient to use and with good performance. 5Supports calibration and can be connected to a computer through a communication cable (not included). Item Type: 7-In-1 Air Quality Sensor Module Material: Aluminum alloy synthetic cardboard Application: Air purifier, air system, smart home, air monitor, etc. Detection Parameters: PM2.5, PM10, VOC, C02, formaldehyde, temperature and humidity Working Voltage: DC5V0.2V (ripple must not exceed 200mv) Working Current: 125mA Working Environment: Working Temperature 0~50 Working Humidity: 15%RH-90%RH (non-condensing) Output Mode: UART at TTL level (3.3V) can freely switch between active response mode and passive response mode. Warm-Up Time: 3 minutes Appearance Size: Approx. 55.8 x 50 x 15mm / 2.2 x 2 x 0.6in Size: Approx. 55.8mm / 2.2in 50mm / 2in 15mm / 0.6in 22.7mm / 0.9in 15.8mm / 0.6in 11.5mm / 0.5in 3.8mm / 0.1in 2.0mm / 0.1in Measurement resolutionMeasuring rangeMeasurement accuracy eCO2 1ppm 400~5000ppm 75ppm PM2.5 0.3ug/m3 0~1000ug/m3 10% PM10/ 0~1000ug/m3 10% Temperature0.01 0~60 0.5 Humidity 0.04% 0~100%RH 3%RH TVOC 1ug/m3 0~1200ug/m3 12ug/m3 eCH2O 1ug/m3 0~500ug/m3 3ug/m3 1 x 7-In-1 Air Quality Sensor Module