Industry's first 1000 watt DE HPS compatible magnetic core and coil ballast. Exposed ballast design is compact and runs cool! Hard Core® DE offers superior cooling capabilities while extending the longevity of the capacitor and ignitor. Dual universal lamp cord receptacle is compatible with all Sun System® brand DE reflectors as well as other branded DE reflectors. Our Hard Core® Double-Ended ballast with dual input voltage easily switches from 120 to 240 volt power! Simply unplug detachable 8 foot 120 volt power cord (included), turn power plate around for 240 volt power and plug in a 240 volt power cord (240 volt power cord sold separately, Part #903082). Powder-coated steel housing with louvered venting and solid design helps protect internal components. Rubber feet reduce noise and vibration. Excellent ballast quality with high temp 150°C wire connections will provide years of trouble-free operation. For use ONLY with 1000 watt double-ended HPS lamps. Do NOT use with other wattages or lamp types.