CO2 Detector Portable Battery Powered HCHO TVOC Temp Humi 5 in 1 Meter Air Quality Monitor Feature: UPDATE IN 1 SECOND: The air quality monitor can update the system in real time for 1 second and can directly detect air quality without calibration ACCURATE DETECTION: The high-performance analytical system is used do accurately capture the weak current generated by the electrochemical reaction process of the CO2 detector for more accurate detection BATTERY LIFE: The CO2 detector is equipped with a high capacity 3,7V lithium battery with a capacity of 1200mAh, and the standby time is about 240 do 360 minutes MANY USES: 5-in-1 meter can detect the concentration of carbon dioxide in the air and HCHO, TVOC, Temp, Humi ABS scratch resistant: The air quality meter uses excellent ABS material, has impact resistance, scratch resistance, is environmentally friendly Specification: Item Type: CO2 Detector Product material: ABS Product Weight: 106 g / 3,7 oz (Approximate) Product size: approx. 9 x 3,5 x 7 cm / 3,5 x 1,4 x 2,8 inches Application: Do detection of carbon dioxide concentration in air Battery attribute: 3,7V lithium battery, battery capacity: 1200mAh Indication of carbon dioxide: 0 do 799 ppm: Flashes green 800 do 1199 ppm: Flashing yellow 1200 do 1599 ppm: Flashing orange 1600 do 1999 ppm: Flashes red Above 1999 ppm: Four colors flash List of packages: 1 x Carbon Dioxide Detector 1 x USB Plug 1 x User Manual