This product is composed of high quality components.It's working performance is stable and reliable,It's made of two-way Silicon Trigger circuit, use rotating potentiometer to adjust light source(motor) or(speed) control. Turn the switch on and rotate clockwise before dimming Light source or wind speed changed from dark to bright and from low to high, Widely used in hotels,hospitals, and homes as indoor to control light sources or speed up.

Note: other color and voltage can be customized.