The GrowBright Professional 1000w Switchable Ballast is UL listed and not only able to run HPS and MH Lamps it is campatible with 120v or 240v!
GrowBright Professional 1,000-Watt High Pressure Sodium/Metal Halide BALLAST in ALUMINUM Enclosure with 120 volt power cord (can also accept optional 240 volt power cord!)
About the ballast :
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