Features: *5 in 1 professional air quality meter has an advanced sensor and a detection algorithm to accurately measure the data of HCHO, TVOC, temperature and humidity. *The air quality monitor is equipped with a large colourful LCD screen, which is easy to read even in dark environments. The colour bar would change in real time when the concentration recorded varies and alerts users by colour change. *Air quality meter with built-in 1200 mAh high-performance battery for a longer playing time, USB rechargeable, you can charge the air quality monitor via power bank, power supply, computer, PC, laptop. *With a healthier lifestyle at home, the air quality monitor automatically and accurately detects formaldehyde and TVOC concentration in the air, which is often used at home, car, hotel, apartment, office, cafe, library, outdoors and more. * We strive to provide a high quality air quality monitor to provide a healthier lifestyle without risk purchase. Specifications: Material: ABS color white Size: 89 * 70 * 35mm Power supply: 1200mAh battery Interface: Type-C (1.2 m) Working voltage: 5V Detectable substances: HCHO, TVOC, Afor for Qi Display: LED digital display Duration:about 10 hours Package Included: 1PCS air quality monitor 1PCS USB cable 1PCS manual 5 In1 Indoor Air Quality Monitor Hcho Tvoc Afor For Qi Meter Detector Tester Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you.