جهاز قياس درجة حرارة ثاني أكسيد الكربون PM2.5 مع مقياس رطوبة داخلي عالي الجودة أسود 18.00x9.00x17.00سم

This multifunctional air quality detector realizes 4 in 1: CO2, PM2.5, temperature, and humidity. The combination of infrared ( NDIR) and scattering technology enables the accurate records of concentration of CO2 and PM2.5.These four indexes, together with the time, will be shown clearly on the digital screen.  
Features: 
Detection of the four indexes, including CO2, PM2.5, temperature, and humidity.
Detection ranges largely from 0 to 999 ug/M³ for PM2.5 and from 400 to 5000 ppm for CO2.
Real-time monitoring enables you to know the data of each second exactly. 
It can also serve as a clock with the time shown on the screen. 
The 3000amh Li-battery guarantees a long working time. 
Specifications:
Item name: multi-functional CO2 PM2.5 air quality detector
Model: DM72D 
Material: metal+ABS
Color: black
Display method: common screen 
Measurement items: CO2, temperature, humidity, and PM2.5
CO2 technology: infrared (NDIR)
Detection range:
CO2: 400-5000 ppm 
PM2.5: 0-999 ug/M³ 
Battery: 1 * lithium battery  3.7v 3000mAh (included)
Power source:  USB charging  
Item size: 14.5*7.8*9.72 cm 
Item weight: 225g
Package information:
Package size: 18*17*9cm 
Package weight: 460g
Package list: 1*main unit; 1* manual; 1*charging cable