Features:* The 5-in-1 professional air quality meter has an advanced sensor and detection algorithm to accurately measure HCHO, CO2, TVOC, temperature and humidity data.* The air quality monitor comes with a large color LCD screen that is easy to read even in dark surroundings. The color bar will change in real time when the recorded concentration changes and alerts users of the color change.* Air quality meter with built-in 1200mAh high performance battery for longer playback time, USB rechargeable, You can charge the air quality monitor via power bank, power adapter, computer, computer, laptop.* With a healthier lifestyle at home, the air quality monitor automatically and accurately detects CO2, formaldehyde and TVOC concentration in the air, which is often used in home, car, hotel, apartment, office, cafe, library, outdoor and more.* We strive to provide high-quality air quality monitor to ensure a healthier lifestyle without the risk of purchasing. Specifications:Material: ABS Color white Size: 89*70*35mm Power supply: 1200mAh battery Interface: Type-C (1.2m) Operating voltage: 5V Detectable substances: CO2, HCHO, TVOC, AQI Display: LED digital display Package includes: 1pcs air quality monitor 1pcs USB cable 1pcs manual