****Please note that Galaxy Ballasts come with Female Adapter installed on the lamp outlet. Male Adapter is recommended for easy installation**** GALAXY Select-A-Watt 250W-400W Metal Halide Electronic Ballast by Sunlight Supply. • Now includes Select-A-Watt™ feature allowing you to choose your wattage. Power 4 different wattage lamps with the same ballast. • Features the exclusive Smart Volt™ – operates on both 120 & 240 volt power. 6 foot 120 volt power cord included. 240 volt cord sold separately (Code No. 903082). • Runs all mogul-based & double-ended metal halide lamps. • 99.9% power efficiency. • Resettable circuit breaker for short circuit protection. • Anodized, extruded aluminum housing. • Silent operation. • Compatible with all Reef Optix® & LumenMax® reflectors. • Rubber feet reduce noise and vibration. • These come wired with our standard female lamp cord receptacle that accept our proprietary, patented male lamp cord, making these units compatible with all Sunlight Supply® reflectors. * 5 Years Manufacturer's Warranty. (3 full YEARS + 2 years prorated).