Exposed ballast design is compact and runs cool! Hardcore offers superior cooling capabilities while extending the longevity of the capacitor and ignitor. Accepts all Sun System lamp cords. Our Hard Core ballast with dual input voltage easily switches from 120 to 240 volt power. Simply unplug detachable 12O volt power cord (included), turn power plate around for 240 volt power and plug in a 240 volt power cord. 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. 1000 Watt ballast is switchable between Metal Halide and High Pressure Sodium.