Air Quality Monitor 5 in 1 Indoor CO2 Detector HCHO TVOC Formaldehyde Tester LCD Temperature Humidity Meter Rechargeable CO2 Alarm Meter The 5-in-1 multifunctional air quality monitor can detect CO2, HCHO (formaldehyde), TVOC, temperature and humidity in your living environment. Adopting a sensitive sensor, it provides fast and accurate data on the digital LCD color screen. Built with 1200mAh rechargeable battery, it can be widely used in home, office, classroom, hotel, gym, greenhouse, warehouse and more! <strong>Features:</strong> 5 in 1 Function: The multifunctional air quality monitor cares for your health and can be widely used in home, office, classroom, hotel, gym, greenhouse, warehouse, etc. LCD Color Screen: 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 semiconductor sensor, 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 above 1500 ppm. Rechargeable Design: Built-in 1200mAh rechargeable lithium battery for strong endurance. With USB Type-C interface for fast charging via AC 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. <strong>Note:</strong> 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. Thank you for your understanding. <strong>Specifications:</strong> Color: Black/White (Optional) Material: ABS + Electronic Components Screen: LCD Digital Color Screen Voltage: DC 5V Detection Principle: Semiconductor Sensor CO2 Detection Range: 400-5000PPM CO2 Detection Sensitivity: 1PPM HCHO Detection Range: 0-0.6mg/m3 TVOC Detection Range: 0-2.0mg/m3 Temperature Measurement Range: 0-50 Temperature Measurement Accuracy: ±1 Humidity Measurement Range: 0~99%RH Humidity Measurement Accuracy: ±2%RH Charging Port: Type-C, 500mA Built-in Battery: Lithium Battery 3.7V 1200mAh 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 <strong>Package List:</strong> 1 * Air Quality Tester 1 * USB Cable (Type-C) 1 * User Manual (English, Japanese, Italian, German, Spanish, French) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.