The Pro-Series Xenon modular series with integral electronic transformer operates 12-volt halogen lamps to deliver the best color rendering with maximum light output and lamp life. The efficient operation of low voltage lamps, along with a unique housing/reflector system, reduces mounting surface temperatures well below what is typical for xenon undercabinet fixtures. Pro-Series Xenon fixtures are optimized for fast permanent installation, mounting either flush to the rear back splash or to the front lip of cabinetry to suit project conditions and homeowner preference. Lamp 20W-12-volt xenon bi-pin high output lamps supplied with fixture. Projected 10,000 hour life based on actual operating voltage in fixture. Transformer: Integral Electronic 120 to 12-volt step down transformer is accessible for maintenance without having to remove fixture. Housing: Extruded aluminum. Designer white, black, brushed bronze or brushed silver finish. Reflector Specular aluminum reflector behind each lamp. Diffuser: Clear prismatic tempered glass lens for maximum light transmission. Reverse-angled to minimize preceived brightness. Captive lens has hinged design for tool-less relamping. Spring loaded retention bar prevents lens from accidently being bumped loose. Switch: Convenient integral Hi/Lo/Off rocker switch. Dimming: For best results use dimmer specifically designed for use with electronic low voltage transformers. Labels: UL Listed.