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 LED display. This instrument not only accurately measures the concentration of carbon dioxide in the air, but also showcases personal style through graffiti(Tuya). After connecting your phone,you can view real-time data anytime and anywhere, making you familiar with the air quality around you. 

-Material:ABS

-Product Size：95*100*52MM
-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
-CO2 Alarm function:CO2 alarm value can be set and can turn off the alarm function
-Included:Main Unit+manual+charging cable
 
Advantage : 
-WiFi  TUYA APP,datas transfer to mobile phones  to check CO2 values Wireless
-Integrated detection with CO2/Temperature/Humidity
-Auto calibration 
-Exceeding Alarming with auto detection and auto measuring
-Alarm sound can be turned  off / on  by hand operation
-Color Smile face , very realistic.
-Mini size very smart
-User-friendly and easy operation  

DM89 package details： 
Product N.W.：150g
Product G.W.：250g 
Package Dimension：12x10.6x7cm 
CTN Dimension：42x36x26.5cm
CTN Weight:10.5KG
40sets/CTN