Press the Power Button to turn the deodorising system on or off. The unit offers three selectable modes: Ozone, Negative Ion, and Ozone + Negative Ion, allowing you to choose the preferred deodorising operation. Select a working time of 1, 5, 15 or 30 minutes using the timer button. Once the selected cycle is complete, the unit automatically enters sleep mode and will resume operation according to the preset cycle. The built-in fan operates during the deodorising process to help circulate air inside the cabinet.