The JNUO 9815 air purifier is characterised by a cubic column and circumferential air inlets at the bottom which take in room air from an angle of 360 degrees. The air is then discharged at the top. The built-in dust sensor automatically adjusts the speed to optimise cleaning performance. The lamp indicates the cleaning status by changing the colour and frequency of the light and informs the user about the air quality and the operating status of the unit.