Office School Air Quality Indicator CO2 Detector HCHO TVOC CO CO2 AQI 

Features:
Protect your health.
Used to detect formaldehyde, TVOC, CO, CO2, air quality.
5 in 1 multifunctional Tester
Imported chip for accurate and reiable measurement
One key power on and off
Use in school, car, new house, new furniture, office to indicator the enviroment.
Fast delivery

Specifications:
Material: safe ABS
Color: white
Testing items: HCHO, TVOC, CO, CO2, AQI
Working voltage: 5V/1A
Error: 3%-30%
Power supply: lithium-battery (included)
Battery-capacity: 1000mAh
Preheating time: 120s
Charging time: 4h
Standby time: 180~240mins
Item size: 125 * 80 * 35mm / 4.92 * 3.15 * 1.38in 
Package size: 165 * 95 * 40mm / 6.5 * 3.74 * 1.57in
Package weight: 310g / 10.93ounces 

Package List:
1 * 5 in 1 Detector
1 * Charging Cable
1 * User Manual