Spec:
Item Type: Air Quality Meter
Model: ZN-MT32
Temperature Range: 0-70℃
Display: LCD screen and backlight
Operating Voltage: DC5V 1A TYPE C USB
Operating Current: 180mA
Sensors: PM2.5 infrared sensor, semiconductor sensor
Battery: 1 x 3.7V rechargeable li ion battery 2000mAh
Size: Approx. 90 x 70 x 35mm / 3.54 x 2.76 x 1.38in
Material: ABS
Color: Black

How to Use:
1. Single click on the main interface to switch between Celsius and Fahrenheit.
2. Double click to turn on or off the sound.
3. Triple click to enter the calibration interface.
4. Quadruple click to enter the screen off mode (single click to turn on the screen in screen off mode).
5. Quintuple click to enter the curve interface (single click to switch in the curve interface, quintuple click to return to the main interface).
6. Sextuple click to enter the PM2.5 comparison interface (double click to record the first group of 30-second evaluation data, double click again to record the average data of 2 groups of 30 seconds, quintuple click to return to the main interface).
7. Septuple click to enter the temperature adjustment interface (single click to increase by 1 degree Celsius, double click to decrease by 1 degree Celsius, quintuple click to exit or exit the interface after five seconds of inactivity).

packing list:
1 x Air Quality Meter
1 x USB Cable
1 x User Manual