It is an advanced multifunctional air quality monitor that combines various high-quality air sensors with a built-in fan to provide real-time monitoring of Carbon Dioxide (CO2),Particulate Matter (PM2.5/10), AQI,Temperature and Humidity .you can set personalized reminder thresholds. When the carbon dioxide concentration exceeds the standard you set, a clear sound alarm will be immediately issued.it has historical recording function, it automatically stores detection data for a period of time, allowing you to easily trace the changes in air quality.
It supports intelligent connection and convenient operation through Tuya WiFi, after connecting your phone, you can view real-time data anytime and anywhere.

-Product Size：150*74*82MM

-WiFi  TUYA APP ,Transfer datas to mobiles phons ,support  Android and Apple phones  ,also support all kinds of languages             
-3.5 inch LCD screen display

- Temperature unit between Celcius and Fahrenheit  Switch

-CO2 Technology :  infrared ( NDIR)

-PM2.5 Sensor technolology : Laser Scattering
-Detection range:    
CO2 Detection range:  400-5000 ppm
PM2.5 Detection range : 0-999 ug/M3  
AQI Detection range : 0-500  
-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 2000mah includding USB Chargeing cable
-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/PM2.5/AQI
-Auto calibration ,Exceeding Alarming with auto detection and auto measuring
-Different interface switching,History Records  save
-Screen off time: never, 1min, 10min and 30min, can save power .
- suppot adjusting screen brightness  :25%, 50%, 75%, 100% and auto.
-Temp unit:  Celcius and Fahrenheit  Switch      
-Alarm sound set: On and off
-Color Smile face , very realistic.

Package details： 
Product N.W.：225g 
Product G.W.：400g 
Package Dimension：18.7*12.1*7.2cm
CTN Dimension：56*28*42cm 
CTN Weight: 9.5KG
20sets/CTN