Due to the three sensors of the device, all information regarding the air quality and the brightness is collected, and, as a result the operation of the air purifier is adjusted accordingly. By pressing on the touch screen the automatic function, the purifier can, if necessary, change the fan speed, in order to better respond to the room conditions, providing fresh air. Enjoy the comfort and carefree usage of the device while at the same time save energy by avoiding any unnecessary use.