... . One ballast can run 3 different wattage bulbs 2. CE & UL One ballast can run 3 different wattage bulbsKey Word: Electronic ... Ballast 400W, Hydroponic grow ballast 400w, electronic ballast 400w, 110V, UL Listed1) Input Voltage Range: 120V, 208V, 240V 2) Input frequency ... 8ft power cord 9) 3-Year factory warranty 10) CE & UL certified