The White Dimmer is a controller that can adjust the brightness to an infinite range, and its control mode is a knob operation control, so you can adjust the light to the appropriate lighting brightness according to your actual needs. Connect the load line and then connect the power cable. Before you turn on the power, please make sure there is no short circuit between the wires. Features a rotary button with the following functions: Press the button clockwise to make the brightness brightness, turn the clockwise until the last time the brightness is highest. Press counterclockwise to lower the brightness and turn the light off when it is twist to the end.