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Input Voltage.............................................................. (Dual) 120/277V, 60Hz Input Wattage................................................................................. 3.5 Watts Lamps Operated.......................................................18 & 26 Watt quad tube 2-pin lamps with integral starter Emergency Operation ................................................................. 90 minutes Initial Illumination........................................................................ 650 lumens Operating Temp............................................................................0° to 55° C Battery..............................................................................24 Hour Recharge 7-10 Year Life Expectancy Weight.............................................................................................. 4.4 lbs. Approval..........................................................................UL and CUL Listed