We are offering battery backup ups. Battery-protected and surge-only outlets, reserves power capacity and run time for connected equipment that require battery back-up while providing surge only protection for less critical equipment. Automatic self-test, periodic battery self-test ensures early detection of a battery that needs to be replaced. Audible alarms, provides notification of changing utility power and ups conditions. Intelligent battery management, maximizes battery performance, life, and reliability through intelligent, precision charging. output power capacity :400 watts / 650 vainput voltage :230vtypical recharge time :8 hour(s)output connections :(1) iec 320 c13 (surge protection), (3) iec 320 c13 (battery backup)control panel : led status display with on line, on battery, replace battery and overload indicatorsaudible alarm : alarm when on batterydistinctive low battery alarmoverload continuous tone alarmsurge energy rating :320 joulesdimension (wxdxh) :approx. 91 x 284 x 165 mm.