"ADVANCE" ELECTRONIC BALLAST *9.5" L x 1.7" W x 1.18" H *Intellivolt electronic ballast *Approved for commercial applications *For (3-4) F17T8, F25T8 or F32T8 lamps *Instant start and high power factors *Input voltage 120V or 277V systems *Input frequency 50/60 hertz *Ballast factor (3) lights 1l00 (4) lights .88 *Ballast efficacy factor 3 lights 1.08 (4) lights .79 *Max THD percent (3) lights 10% (4) lights 10% *Minimum start temperature F32T8 0 deg. F, F32T8/ES 60 deg. F *UL listed and CSA certified *Compatible with Sensormatic systems *Boxed *Discovery SUP, HWU