It is an advanced carbon dioxide detection instrument built in high-quality Infrared ( NDIR ) sensor to allow real-time monitoring of carbon dioxide (CO2), temperature and humidity on its digital LCD display. Accurate measurement technology and reliable data display allow you to easily understand the changes in carbon dioxide in the air. 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.
This instrument is suitable for various fields,  Its design is simple and elegant, and the operation is simple and easy to understand. Just press the start button and the instrument can quickly enter the working state, providing you with real-time  carbon dioxide (CO2) concentration data. 

-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