Features: 1. Hundreds of ventilation holes in the rear not only accelerate the convection between the air and the machine, thus realizing effective detection, but also provide a good heat dissipation effect. 2. The electrochemical detection module of good quality has good accuracy, stable performance, strong anti-interference ability, low consumption and long cabinet life. 3. The smart carbon dioxide value tester gas analyzer uses an air semiconductor TVOC sensor to monitor the temperature and humidity of the air quality. 4. For everyone, It39;s necessary to know the air quality of the place where you live. 5. It39;s easy to carry the intelligent air quality monitor that can help us detect the gas air pollution in household, kitchen, bedroom, office, school, car, hotel, travel. Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement Description: Size: As the picture shown Package List: 1 x Cable Line 1 x Manual 1 x CO2 Meter Digital