Description Features: *1. We all know that air is an indispensable part of our lives, but the air is colorle and tastele, so we need an air tester to monitor the air quality. This air quality monitor is an excellent choice for you. *2. This CO2 tester comes with a LCD large screen with different font colors to show display different air quality, green: 400-799ppm, yellow: 800-1199ppm, orange: 1200-1599ppm, red: 1600-1999ppm, 2000ppm above four colors flash at the same time, offering you an instant observation in real time. *3. This air quality monitor features compact in size and light in weight for easy carrying. The ventilation hole design in the rear accelerates the convection between the air and the machine, achieving effective detection and fine heat diipation effect, ensuring a longer service life of the product. *4. 1200mAh large capacity battery for long working time. Type-C charging interface for easy charging. *5. The product need no calibration, which can achieve accurate detection of carbon dioxide after startup, which is widely used in greenhouse farming agricultural production, production warehouse, laboratory, family, etc. Description: *1. Color: black/ white *2. CO2 measuring range: 400-5000 ppm *3. Temperature measuring range: 0-50 *4. Humidity measuring range: 0-99RH *5. Battery: 3.7V, 1200mAh *6. Size: 90 * 70 * 35mm / 3.5 * 2.8 * 1.4in *7. Weight: 117g / 4.1ounce *8. Package size: 140 * 125 * 41mm / 5.5 * 4.9 * 1.6in *9. Package weight: 173g / 6.1ounce Package includes: 1 * Air Quality Analyzer 1 * USB Cable 1 * User Manual