The easy to use LED touch switch dimmer is constructed of a metal body that reacts to touch. The LED touch dimmer works with both 12 volt and 24 volt lights. Tap or touch the LED dimmer switch for less than 5 seconds to turn the lights on or off. To dim lights, touch for more than 5 seconds and your lights will dim down. Touch again for more than 5 seconds to bring the brightness back up.