Product description:

PM2.5 Detector Meter with USB Cable, Digital LED Air Quality Monitor PM2.5 Detector Temperature Humidity Meter Pollution Meter Sensor Tester

Features : 
PM2.5 measurement, adopt laser sensor technology
HD LCD display 
Temperature and humidity measurement
Index exceeding reminder, when PM2.5 value exceed 
100 ug/m³, the display will blink
Power saving function, 10 minutes automatically shut 
down in case of batteries powered. 

Specification :

Product Description：
How to Work ---> Precision laser sensor detection. Advanced laser sensor detection technology accurately detects PM2.5 in the air and converts it into a digital display, to display different health level warnings in different colors.
More accurate results ---> Laser scanning detection of PM2.5 results in more stable and accurate detection than infrared sensors.
Rechargeable ---> Built-in rechargeable battery, 500mAh large capacity, support 4-5 hours of continuous operation.
Exquisite ---> The volume is only 4 cubic inches, easy to carry, and can be carried at will.
Multi-purpose ---> It is suitable for a variety of occasions such as office, home, garden, car, etc., to keep abreast of the air quality around you.