This TRE12L20DC 20 watt dimmable electronic LED Driver from National Specialty Lighting can dim LED light output over the full range from 100% to 0%. They are class 2 rated and designed to operate with most standard MLV/TRIAC dimmers by brands such as Lutron and Leviton, which are commonly used in home and commercial installations. They are housed in a low profile aluminum enclosure that includes 2 knock-outs to enable easy installation. They include Auto Reset, over current and short circuit protection and efficiency of 90% and higher allows the driver to operate at low temperatures. Perfect for powering LED MiniDisc lights. For smooth dimming, an 8 watt minimum load is required.