The LED dimmer is flush-mounted, with a mounting hole size of 10mm/0.39 inches. It saves space and can be easily attached to LED lights. This LED light dimmer switch is typically used as a DC 12V power switch and can also be used as a 3.6V to 15V LED touch switch. Please ensure your driver is a constant voltage driver, as this dimmer switch can only be connected to a constant voltage driver. This LED dimmer switch cannot be connected to a constant current driver. You can refer to the image to understand the difference between constant voltage and constant current drivers. 12V DC LED Dimmer: DC switch input voltage: DC 3.6-15V; working current 2.5A. The 12V dimmer switch offers intelligent control; simply touch to turn on, touch again to turn off, and press and hold the dimmer switch to adjust brightness from 0% to 100%. Long-press the touch light control module for stepless dimming and light control. 12V Volt Switch for RVs, cabinets, wine coolers, display cases, wardrobes, and more. The 12-volt light switch is also used to control LED lights such as desk lamps, ceiling lights, and other smart devices; you can operate the LED switch on other items. Size: 10mm Material: ABS Color: White Package Contents: 2 x LED Touch Switch Only the above package content is included, other products are not. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.