Strong anti-interference ability, low consumption and long service life.The product does not need calibration, it can be measured immediately when it is turned on, and it can accurately detect carbon dioxide.Different colors correspond to different air quality, suitable for offices, homes and other occasions.Hundreds of ventilation holes on the back of the chassis can not only accelerate the convection between the air and the machine for effective detection, but also good heat dissipation.Widely used in: agricultural planting, vegetables, production warehouse, material processing, home interior, etc.Eight in one: screen display , CO2 value, TVOC value, HCHO value, PM2.5, PM10, PM1.0, temperature and humidity.Name: Air Quality InspectionMeter type: 8 in 1 blackBattery: 1*3.7V, 2000mAh lithium battery (not included)CO2 detection range: 100 -5000 PPM, +50 +5%PPMCO2 detection sensitivity: 1PPMTVOC detection range: 0-2.0 mg/mHCHO detection range: 0-0.6 ma/mTemperature measurement range: -10 to 50 CTemperature measurement accuracy: +/- 1Humidity measurement range: 0%-99%RHHumidity measurement accuracy: +/- 2%RHColour: blackMaterial: ABSSize: about 70x35x89mmPackage Contents:1 * Air Quality Detector1 * USB Cable1 * English ManualOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.