This Galaxy® Select-A-Watt® ballast can operate a 1000 watt lamp at 600, 750, 1000 watts and Turbo Charge®. This ballast will properly drive 600, 750 & 1000 watt lamps. Set the desired wattage on the Select-A-Watt® dial and install the correct lamp. Comes pre-wired with a dual universal lamp cord receptacle that is compatible with all Sun System® brand reflectors as well as other branded reflectors. Includes a 6 foot 120 volt power cord. Purchase a 240 volt power cord separately (#903082). The Galaxy® Select-A-Watt® ballast runs on 120-240 volt power. This ballasts has an extruded aluminum housing that is very lightweight. It features soft starting and fan cooling. The Galaxy® Select-A-Watt® ballast is extremely efficient at 99.9%. This state-of-the-art ballast is manufactured to provide today's serious grower with maximum flexibility & performance. Galaxy's state-of-the-art ballasts are manufactured to provide today's serious grower with maximum flexibility & performance. The Galaxy® Select-A-Watt® is the preferred "dimmable" electronic ballast on the market. The Galaxy® brand name carries a strong reputation of reliability and performance manufactured by Sunlight Supply. Galaxy 1000w ballast Turbo Charge® is designed for 1000 watt lamps The Turbo Charge® feature will increase the output of a 1000 watt lamp (only) by approximately 10%. You will achieve peak performance, but this may decrease your lamp life. Extruded aluminum housing is engineered to dissipate heat and keep the components cool Smart Volt™ feature allows ballast to run on 120, 208 or 240 volt power. Detachable power cord allows easy change overs. Comes standard with 120 volt cord, purchase 240 volt cord separately Resetable circuit breaker for short circuit protection "S" style lamp cord receptacle (two round prongs and one flat prong) Operates both HPS & MH lamps Completely silent and lightweight Extremely efficient – 99% power factor FCC compliant.