It is a  CO2 Meter  built in high-quality Infrared ( NDIR ) sensor to allow real-time monitoring of carbon dioxide (CO2), temperature and humidity on its display.It is with the 3 emoji symbols, which visualizes the CO2 air quality. What is more ,the biggest highlight of this detector is its ability to display the maximum and minimum values of CO2 concentration. This feature allows you to not only understand the current level of carbon dioxide concentration, but also trace the trend of concentration changes over a period of time. 

Whether it is a sudden high concentration peak or a sustained low concentration state, it can be clearly seen at a glance. By analyzing the maximum and minimum values, you can better evaluate the ventilation status of the environment, take effective improvement measures in a timely manner, and ensure that the air remains fresh at all times.

-Material:ABS

-Product Size：162*94*87MM
-LED Screen display
-CO2 Technology :  infrared ( NDIR) 
-Temperature unit Celcius
-CO2 Detection range:  400-5000 ppm

-CO2 Alarm  value : 1000ppm ,support hand Setting  CO2 alarm threshold from 800ppm-2000ppm.

-CO2 Alarm  on /off function(if users do not like alarm ,people can turn it off )
-Power supply：rechargeable  Li-battery 1600mah includding USB Chargeing cable
-Included:Main Unit+manual+charging cable

Advantage : 
-Integrated detection with CO2/Temperature/Humidity
-Auto calibration 
-Very long working time up to 12 hours 
-Exceeding Alarming with auto detection and auto measuring
-Alarm sound can be turned  off / on  by hand operation 
- Smile face , very realistic.

Package details： 
Product N.W.：225g 
Product G.W.：300g 
Package Dimension：112*68*66 mm 
CTN Dimension：55.0*28.0*42.0cm
CTN Weight: 10kg 
40sets/CTN