It is an advanced CO2 Meter built in high-quality Infrared ( NDIR ) sensor to allow real-time monitoring of carbon dioxide (CO2), temperature and humidity.Accurate measurement technology and reliable data display allow you to easily understand the changes in carbon dioxide in the air. If the CO2 concentration reaches the alarm value,then the monitor will trigger a danger alarm.

It has the historical recording function, automatically stores detection data for a period of time, allowing you to easily trace the changes in air quality.By monitoring the concentration of carbon dioxide,you can adjust the ventilation system reasonably, improve indoor air quality, and create a healthy and comfortable environment for you and others.

-Product Size：145*78*97.2MM
-4.3 inch LCD screen display ,History Records  save

- Temperature unit between Celcius and Fahrenheit  Switch

-CO2 Technology :  infrared ( NDIR) 
- CO2  detection range:  400ppm  -5000 ppm
-CO2 Alarm  value : 1000ppm.

-CO2 Alarm  on /off function(if users do not like alarm ,people can turn it off by hand setting )
-Power supply：rechargeable  Li-battery 3000mah
-Included:Main Unit+manual+charging cable

Advantage : 
-Integrated detection with CO2/Temperature/Humidity
-Auto calibration
-support History Records  save  
-support Temperature offset.
-Exceeding Alarming with auto detection and auto measuring 
-Alarm sound can be turned  off / on  by hand operation
-Color led changes for different Co2  Values

DM72C package details： 
Product N.W.：225g 
Product G.W.：470g 
Package Dimension：18.7*11.5*10.3cm
CTN Dimension：56*28*42cm 
CTN Weight: 10.05kg 
20sets/CTN