How to use: 1."'LIGHT button: Press the light button to enter the LED light to turn on or adjust the light color, (strong/weaklswitch status) 2."MIST" button: Press the spray button to enter the working mode, which can control the spray function and switch status Notice: 1. Make sure you have added water to the sink before pressing the "MIST button. Press the "MIST" button because there is no water and the diffuser will burn out. 2. Follow the maintenance instructions for regular cleaning to avoid malfunctions. 3. Please add water below the Max line. 4. Do not add water beyond the Max line at any time. 5. Do not turn on when the tank is empty