Nanolux FLIP-1000W 1000watt Flip Ballast Diagnostic LED  Dimmable lamp function: 100%  75%  50%  Random Start technology  Runs 120V240V  Strikes both MH and HPS bulbs  Comprehensive shortcircuit/circuit overheat/lamp failure protection  Can be used as a single (nonflip) ballast or used with dual lamps in flip mode  2year warranty