LIGHT Button

press first turn on the LED light, color changes automatically 

Press second: choose one of LED light color you like 

Press third: select dim or bright color

MIST Button

Press first: continuous mist coming out

Press second: 1-hour timer

Press third: 3-hour timer

Press four: 6-hour timer

Note:

Be sure to use a mild detergent if you want to clean the humidifier 

Don't fill water over the Max line at any time.

Don't switch on power when the tank is empty.

Clean regularly as per Maintenance instruction to avoid malfunction.

Maintenance instruction: 

Add a small amount of warm kitchen detergent remover.

Clean with water. 

use a swab to wipe gently, and then use the cleaning cloth to dry it lightly.