Exposed ballast design is compact and runs cool! Hard Core® 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 reflectors as well as other branded reflectors. Our Hard Core® ballast with dual input voltage easily switches from 120 to 240 volt power! Simply unplug detachable 8 ft 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 #903082). Powder-coated steel housing with louvered venting and solid design helps protect internal components. Rubber feet reduce noise & vibration. Excellent ballast quality with high temp 150° C wire connections will provide years of trouble-free operation. Removable stainless steel handles allow easy handling. Compatible with metal halide (MH) or high-pressure sodium (HPS) lamps up to 1000 watts.