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Input Voltage.............................................................. (Dual) 120/277V, 60Hz Input Wattage................................................................................. 3.5 Watts Lamps Operated.............7, 9 & 13 Watt Twin Tube 2-pin with integral starter 9W-13W USA quad 2-pin 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................................................................................................1.5 lbs. UL Conditions of Acceptability..................................... Must be factory wired Battery temperature must not exceed 55° C