hydroponics indoor 600W grow digital ballast Input: 120~240V / 50~60Hz, 2M power cord with plug Output: 10CM cord with socket High Power Factor of 99.9% Built-in fan, disperse heat Dimmable, adjustable output power: 50%, 75%, 100% Higher lumen output and more efficient than magnetic ballasts Operates both Metal Halide and High Pressure Sodium Bulbs UL/CUL, CE Listed