Run at 100%, 75% or 50% power (400W runs at 100% and 75%). Strikes both metal halide and high pressure sodium bulbs. Accepts 120V/240V with no wiring needed (both cords included); 208V-configurable with electrician assistance.Accepts 50 Hz to 60 Hz with no extra wiring needed. Runs 15% cooler than other digital ballasts on the market. Has a continuous power factor of 99%. The most stable output frequency of any ballast. Higher lumen output than magnetic ballasts. Can run efficiently on generators without flickering. Resin sealed circuit board for high humidity installations. Can easily be used in conjunction with lighting controllers and flip boxes. The item "QUANTUM 1000W Watt HPS MH Dimmable Digital Grow Light Lamp Ballast QT1000 Hydro" is in sale since Thursday, August 30, 2018. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Gardening Supplies\Hydroponics & Seed Starting\Grow Light Ballasts". The seller is "spectrumhydro" and is located in Santa Fe Springs, California. This item can be shipped to United States.