LED Dimming Switch: Easily adjust the brightness of your 12-24V dimmable lights. Low Voltage Dimmer Switch: Simple wiring and installation for hassle-free use. Knob Switch: control panel compatible with moderate size for . Constant Resistance Tuning Switch: Daily installation needs met with front panel placement. Colour:Black Material:Plastic+Aluminum Package Contents: 1 x Light Dimmer With mounting screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.