This revolutionary dimmable electronic ballast is a premiere choice for your indoor garden. The UltraGROW ES-EB1000/W mini ballast operates 1000-watt metal halide or high pressure sodium lamps, and uses cutting edge circuit board technology to make it half the size of traditional ballasts at a quarter of the weight. Compared to magnetic ballasts, this electronic ballast features up to a 30 percent energy savings, runs 20 percent cooler than other digital ballasts on the market, and allows you to customize your light output between 50, 75, and 100 percent. Pre-wired with a dual lamp receptacle, this electronic ballast allows you to use all commmon reflectors without an adapter plug. Enhance your indoor garden with the UltraGROW ES-EB1000/W digital ballast today!