... , LCD display,Management software, Metal housing, CE certified,external battery connection ModelUPS-4000DLPower2400WTechnologyOnlineInputInput Voltage Range140-280VacNominal Input Voltage220/230/240 ... &RuntimeBattery TypeExternal battery,built-in ChargerCharge Time12 Hours(90%)LCD Status DisplayNormal,Fault,Battery,Charge,Overload,Load,Battery LevelAudible AlarmBuzzerAC unusual/Battery low voltage ...