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, , etc. 5in1: The screen displays the power, CO2 value, TVOC value, HCHO value, temperature and humidity. Specifications: Name: Air Quality Detector Battery: 1200mAh Colour:black Material:ABS Size:90 x 70 x 40mm Package Contents: 1 * Air Quality Detector 1 * Usb Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.