Ulti-Lumenx GLK1000CRHM 1000 Watt Grow Light Digital Dimmable HPS MH System for Plants XL Air Cool Hood Set 1000-watt dimmable digital electronic ballast accept input 110-240-volt(ac). dimmable level 50-percent, 75-percent and 100-percent 1 x 1000-watt super hps bulb and 1 mh bulb 6-inch XL air cooled hood Pair of Rope Ratchet 24-hour timer