Smartmi PM2.5 Air device indicator utilizes a high thickness laser sensor, its most recent molecule estimate is 0.3μm to the base which can hold PM2.5 esteem in your condition whenever. It can interface with Smartmi PM2.5 Air device to set up the air contamination list go, if air contamination is over the standard range, it will dispatch the Air purifier ace naturally to enhance the air quality. It also has the Green orange and red three-shading advanced pointer at the point when the green light is on, the air quality is astounding; When the orange light is on, it shows mellow air contamination; When the red light is on, it demonstrates substantial air contamination. The Programmed shutdown in 30 minutes, sparing force and strength with the High accuracy laser sensor.