Exposed ballast design is compact and runs cool! Hardcore offers superior cooling capabilities while extending the longevity of the capacitor and ignitor. 600 volt lamp cord receptacle – accepts all Sun System® lamp cords (sold separately). 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. (240 volt power cord sold separately). 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. 2 year warranty. 1000 Watt Switchable Ballast Features: Operates both HPS and MH 1000 watt lamps with selectable switch.