What's in the box:

Carbon Monitor Carbon Detector Multi-functional Detector Carbon Dioxide Detector PM2.5 Detector Thermometer and Hygrometer Air Quality Indoor Monitor (Standard)

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