Quietly and efficiently power 600W metal halide conversion and high pressure sodium lamps with a 600W ION Electronic Ballast. This 120/240V versatile workhorse features 400, 600 and Super Charge wattage settings for a wide range of growing applications. Integrated circuit and thermal overload protections provide peace of mind while soft-start technology reduces lamp stress and ignition delay resolves spikes in power draw when firing multiple units simultaneously. Ballast is RF shielded, generator-ready and compatible with a multitude of reflectors and remote cord sets. Includes an 8’ 120V input power cord (240V cord sold separately) and full three-year warranty. Housing is 11.5”L x 7.5”W x 4.75”H, excluding removable handle.