Touch Dome is beautifully designed, elegantly functional and brilliantly engineered to be completely sealed with no o-rings, baffles, or switches to wear out. Unlike old capacitive or e-field switch technology, the Touch Dome is reliable even when wet or wearing gloves and proprietary Optical Field Sense technology provides on/off, color change and even dimming at the touch of a finger. Dia. 6.75" LED Color White/Blue, Dimming Volts 10-30 Amps 410mA@12V