5 In 1 Temperature Humidity TVOC HCHO CO2 Large Screen Display Power Digital Air Quality Monitor Features: 1. It adopts excellent electrochemical detection module, which has high accuracy and stable performance, and can accurately detect carbon dioxide value. Large screen design, measurement data at a glance 2. The smart carbon dioxide value tester uses air semiconductor sensors to monitor air quality, temperature and humidity 3. Using superior electrochemical detection module, high accuracy, stable performance, can accurately detect carbon dioxide 4. Strong anti-interference ability, low power consumption and long service life 5. The product does not need to be calibrated, it can be detected when it is turned on, and can accurately detect carbon dioxide 6. Different colors correspond to different air quality, suitable for office, family and other occasions 7. There are hundreds of ventilation holes on the back of the shell, which can not only accelerate the convection between the air and the machine, so as to achieve effective detection, but also provide a good heat dissipation effect 8. Wide application: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior decoration, etc. 9. 5 in 1: large screen display power, co2 value, tvoc value, hcho value, temperature and humidity Specification: 1. Sensitivity: 1ppm 2. Power supply mode: USB chargingbuilt-in lithium battery 3. Battery capacity: 3.7v, 2000mah lithium battery 4. CO2 detection: 100-5000ppm 5. TVOC detection: 0-2.0 mgm3 6. HCHO detection: 0-0.6 mam3 7. Temperature measurement range: -10 to 50 degrees Celsius 8. Size: 90x70x35mm 9. Weight: 129g Packing list: -1 x carbon dioxide detector -1 x USB data cable -1 x English user manual