Ice Cap electronic ballasts are UL approved and carry a 3 year warranty.Includes a 6 ft. wiring harness with a quick disconnect and an aluminum heat sink mounting plate. This Ice Cap 660 ballast supports the lighting of VHO (1500ma), HO (800ma), or standard (425ma) lamps in any combination. Powers 2' to 6' (not exceeding the maximum wattage) between 140-480 watts, up to 16 ft. length. Bulbs or endcaps are not included. IceCap 660 Powers up to 440 watts. You can run 2,3 or 4 VHO bulbs off one ballast as long as you do not exceed maximum wattage. This ballast will also run PowerCompacts. * ENERGY SAVINGS OF OVER 10% FROM HIGH EFFICIENCY * BUILT-IN CIRCUIT PROTECTION * LONGER LAMP LIFE DUE TO CONSTANT OUTPUT - HIGH VOLTAGE, HIGH CURRENT PROTECTION * LONGER BALLAST LIFE DUE TO LOW HEAT - HIGH TEMPERATURE SHUT-DOWN * COMPACT SIZE TO FIT IN MOST FIXTURES - IMPROPER WIRING PROTECTION * HIGH FREQUENCY OPERATION IS FLICKER & NOISE FREE - AUTOMATIC BULB FAILURE SHUT-DOWN * SAVINGS ON AIR CONDITIONING COSTS - AUTOMATIC RESETTING * STARTS IN COLD TEMPERATURE * STARTS IN LOW VOLTAGE ENVIRONMENTS * ALLOWS UP TO 30 FEET BETWEEN LAMP AND BALLAST