Feature:1. 5 in 1 Function: Multifunction air quality monitor cares for your health and can be widely used in home, office, classroom, hotel, gym, greenhouse, warehouse, etc.2. LCD Color Screen: Displays CO2, CO2 index, HCHO (formaldehyde), TVOC, temperature, humidity and battery level. LCD digital color screen for easy and clear reading even in dark environments.3. Carbon Dioxide Tester: Adopts air convection detection, quickly and accurately detects CO2 concentration in the living environment.4. 4-color Indicator \u0026 Alarm Buzzer: 0-799PPM (Green), 800-1199PPM (Yellow), 1200-1599PPM (Orange), 1600PPM and above (Red). The buzzer alarms when the CO2 concentration is above 1500PPM.5. Rechargeable Design: Built-in 1200mAh rechargeable lithium battery for strong endurance. With type-C USB interface for quick charging via power adapter, power bank, laptop, etc.6. Concise Appearance: Simple but stylish appearance, desktop or wall mounted installation, fits in well with different styles of houses. Compact and lightweight, easy to carry.Specification:5-in-1 multifunction air quality monitor can detect CO2, HCHO (formaldehyde), TVOC, temperature and humidity in your living environment. Adopting sensitive sensor, it provides quick and accurate data in the LCD digital color screen. Built in with 1200mAh rechargeable battery, it can be widely in home, office, classroom, hotel, gym, greenhouse, warehouse and more!Features:5 in 1 Function: Multifunction 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 screen for easy and clear reading even in dark environments.Carbon Dioxide Tester: Adopts air convection detection, quickly and accurately detects CO2 concentration in the living environment.4-color Indicator & Alarm Buzzer: 0-799PPM (Green), 800-1199PPM (Yellow), 1200-1599PPM (Orange), 1600PPM and above (Red). The buzzer alarms when the CO2 concentration is above 1500PPM.Rechargeable Design: Built-in 1200mAh rechargeable lithium battery for strong endurance. With type-C USB interface for quick charging via power adapter, power bank, laptop, etc.Concise Appearance: Simple but stylish appearance, desktop or wall mounted installation, fits in well with different styles of houses. Compact and lightweight, easy to carry.Note:1. Please read the user manual carefully before use.2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Color: Black/ White (Optional)Material: ABS + Electronic ComponentsScreen: LCD Digital Color ScreenVoltage: 5V DCCO2 Detection Range: 400-5000PPMCO2 Detection Sensitivity: 1PPMHCHO Detection Range: 0-0.6mg/m3TVOC Detection Range: 0-2.0mg/m3Temperature Measurement Range: 0-50Temperature Measurement Accuracy: ±1Humidity Measurement Range: 0~99% RHHumidity Measurement Accuracy: ±2% RHCharging Port: Type-C, 500mABuilt-in Battery: 3.7V 1200mAh Lithium BatteryItem Size: 90 * 70 * 35mm / 3.54 * 2.76 * 1.38inItem Weight: 107g / 3.76ozPackage Size: 14 * 9.8 * 4.8cm / 5.51 * 3.86 * 1.89inPackage Weight: 168g / 5.93ozPackage List:1 * Air Quality Tester1 * USB Cable (Type-C)1 * User Manual (English, Japanese, Italian, German, Spanish, French)Package List:1 * Air Quality Tester1 * USB Cable (Type-C)1 * User Manual (English, Japanese, Italian, German, Spanish, French)