home professional ce radio control rf tech 433mhz wireless outdoor digital color LCD weather station clock with outdoor sensor

Mini stone design: Length is 0.08meter, width is 0.048meter, height is 0.075meter, its very small. And weighs only 112.5 grams, as heavy as two eggs. Mini stone shaped is fashion and portable to carry.

LED digital display: The screen uses led digital display, with high brightness of display and 180 degree view angle. Led digital display has a life of operation.

Built-in lithium battery: It is powered by rechargeable battery. And can work about 5 hours in full of electricity. Which can let you measure PM2.5 value at anytime and anywhere.

Accurate measurement: This pm2.5 air quality detector measure the pm2.5 in the air by laser scattering, there is a built-in sensor in it. And the pm2.5 measuring range is 0~999ug cubic meter.The measure resolution is 10ug per cubic meter.

Air quality guidance: When the value display on the screen is below 50, it shows the air quality is good. 51~100 shows the quality is moderate. Under these two conditions, the value display in green. But if the value is in 101~150, it shows the air quality is unhealthy for sensitive groups. When the value is in 151~200, it shows the air quality is unhealthy for all groups. In 201~300, it shows the air quality is very unhealthy. When the value is above 300, it shows the air quality is hazardous, we have to do something to improve the air quality at that time. While the value is above 100, the value will display in red and flashing. It is your personal air condition reminder.