1. The LED strip dimmer switch is a buttonoperated control. Simply rotate the button to adjust brightness or turn the light on/off. LED dimming controls are widely used in LED strips, LED lights, mirror lights, small fans, desk lamps, bedside lamps, etc. 2. Specifications of the LED strip dimmer switch: Max current: 3A; Operating voltage: DC 5V; Maximum applicable power: 15W; Size: 66 x 33 x 34mm / 2.6 x 1.3 x 1.34 inches (L x W x H); Total length (including cable): 34cm / 13.39'. 3. The LED dimmer is made of durable and insulating ABS plastic. The button controls 0%100% dimming with no flicker at low brightness, ensuring smooth transitions to avoid eye strain from sudden brightness changes. 4. Instructions: First, connect the load line, then the power line (ensure no short circuit before powering on). Rotate the knob clockwise to gradually increase brightness; turning it fully to the right achieves maximum brightness. Rotate counterclockwise to decrease brightness; turning it fully to the left turns the light off.