Sincereetali5 in 1 multifunctional air quality monitor can detect CO2, HCHO(formaldehyde), TVOC, temperature and humidity in your living environment. Adopting sensitive sensor, it provides fast and accurate data on the LCD digital color screen. Built with 1200mAh rechargeable battery, it can be widely used in home, office, classroom, hotel, gym, greenhouse, warehouse and more! Features: 5 in 1 Function: Multifunctional air quality monitor cares for your health and can be widely used in home, office, classroom, hotel, gymnasium, greenhouse, warehouse, etc. LCD color display: displays CO2, CO2 index, HCHO (formaldehyde), TVOC, temperature, humidity and battery level. LCD digital color display for easy and clear reading even in dark environments. Carbon dioxide tester: adopts NDIR detection principle, air convection detection, quickly and accurately detects the CO2 concentration in the living environment. 4-color indicator and buzzer: 0-799PPM (green), 800-1199PPM (yellow), 1200-1599PPM (orange), 1600PPM and above (red). The buzzer sounds when the CO2 concentration is over 1500ppm. Rechargeable Design: Built-in 1200mAh rechargeable lithium battery for strong endurance. With USB Type-C interface for fast charging via power adapter, power bank, laptop, etc. Concise Appearance: Simple but elegant appearance, desktop or wall-mounted installation, fits well with different styles of homes. Compact and lightweight, easy to carry. Note: 1. Please read the user manual carefully before use. 2. The size and color may be slightly different due to manual measurement and different lighting conditions. Thanks for your understanding. Specifications: Color: Black/White (optional) Material: ABS + electronic components Screen: LCD digital color screen Voltage: DC 5V Detection principle: NDIR CO2 detection range: 400-5000PPM CO2 detection sensitivity: 1PPM HCHO detection range: 0-0.6mg/m3 TVOC detection range: Couleur : noir/blanc (facultatif) Matriel: ABS + composants lectroniques cran?: cran couleur numrique LCD Tension?: 5?V CC Principe de dtection?: NDIR Plage de dtection de CO2?:?400-5000PPM Sensibilit de dtection de CO2?:?1PPM Plage de dtection HCHO?: 0-0,6?mg/m3 Plage de dtection de COVT?: 0-2.0?mg/m3 Temperature measuring range?: 0-50? Temperature measuring accuracy?:??1? Humidity Measuring Range: 0~99%RH Humidity Measuring Accuracy: 2%RH Charging Port: Type-C, 500mA Built-in Battery: 3.7V 1200mAh Lithium Battery Item Size: 90*70*35mm/3.54*2.76*1.38in Item Weight: 107g/3.76oz Package Size: 14*9.8*4.8cm/5.51*3.86*1.89in Package Weight: 168g/5.93oz Package List: 1 * Air Quality Tester 1 * USB Cable (Type-C) 1 * User Manual (English, Japanese, Italian, German, Spanish, French) SincereetaliThis device is very sensitive, can respond quickly, accurate measurement of low level gas concentration.