It is a quality air quality detector, using a superior electrochemical detection module, with high accuracy, stable performance, can accurately detect carbon dioxide value. Large screen design, you can see the measurement data clearly. Different colors display different air quality. You can have a try. Features: Intelligent carbon dioxide value tester uses air semiconductor-sensor to monitor temperature and humidity of air quality. Adopts superior electrochemical detection module, with high accuracy, stable performance, can accurately detect carbon dioxide value. Strong anti-interference ability, low consumption and long service life. The product does not need calibration, it can be tested after booting, and it can accurately detect carbon dioxide. Different colors corresponding to different air quality, suitable for office, family, and other occasions. Hundreds of ventilation holes at the back of housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, etc. 6 in 1: the large screen displays the electricity, PM2.5 value, CO2 value, TVOC value, HCHO value, temperature value, humidity value. Specifications: Material: Plastic Color: White Product Model: PM2.5/HCHO/TVOC/CO2/temperature/humidity Air Detector Detection Technology: Semiconductor detection technology&Infrared detection technology Proper Temperature: 0-70℃ Display Mode: LCD screen+backlight Examination Range: PM2.5 0-999 ug/m3 HCHO 0-9999 ug/m3 TVOC 0-9999 ug/m3 CO2 0-5000 PPM Temperature 0-70℃ Humidity 0-99 %RH Operating Voltage: 5V Sensor: Infrared PM2.5 sensor/semiconductor senser Cell: 1 x 3.7V, 1200mAh lithium cell (included) Item Size: 90 * 70 * 35mm / 3.54 * 2.76 * 1.38in Package Weight: 200g / 7.05ounces Package Size: 140 * 127 * 42mm / 5.51 * 5 * 1.65in 6 in 1: PM2.5 Detection-Range：0-999 ug/m3 CO2 Detection-Range: 0-5000 PPM, +50 +5%PPM CO2 Detection Sensitivity: 1PPM TVOC Detection-Range: 0-9999 ug/m3 HCHO Detection-Range: 0-9999 ug/m3 Temp Measurement-Range: 0 to 70 ℃ Temp Measurement Accuracy: ±1℃ Humidity Measurement-Range: 0%-99%RH Humidity Measurement Accuracy: ±2%RH Packing List: 1 * Air Quality Detector 1 * Cable 1 * Manual