We all know that air is an integral part of our lives. Air quality affects our mind and body, but air is colorless and odorless, and we cannot measure it with the naked eye. At this time we need an air detector to help monitor air quality. Features: Large LCD screen with different font colors to display different air quality. Green 400-799ppm Yellow 800-1199ppm Orange 1200-1599ppm Red 1600-1999ppm 2000ppm The above four colors flash simultaneously. Size and easy to carry 1200mah large-capacity battery works for a long time The type-c charging port is convenient for charging and using. The product can be tested without calibration start-up and can accurately detect the carbon dioxide used in the greenhouse. It is widely used in epidemic prevention and control of the concentration of co2 in the detection population to control the number of people and avoid the risk of cross-infection. or home farming production warehouse laboratory etc. Specifications: Color: Black White (Optional) Co2 Measurement Range: 400-5000ppm Temperature Measurement Range: 0-50 degrees Celsius Humidity Measurement Range: 0%-99% rh Battery: 3.7v 1200mah Item Size: 90*70*35mm/3.5*2.8*1.4inch Item Weight: 117g/4.1oz Packing Information: Packing Size: 140*125 x 41mm/5.5*4.9*1.6inch Packing Weight: 173 g / 6.1 oz Packing list: 1 * Air quality analyzer 1 * USB data cable 1 * User manual Widely used and practical for epidemic prevention, control the concentration of co2 in the detection crowd, in order to control the number of people and avoid the risk of cross infection. or home farming production warehouse laboratory etc.