... Frequency50/60Hz±5%Max.Input Current52AOutputNominal Output Voltage220/230/240VacMax.Output Current45.5AOutput Voltage Range220/230/ ... DisplayStatus of UPS,input voltage,input frequency,output voltage,output frequency,battery voltage,load Audible AlarmBuzzerAC unusual ... ProtectionYesBattery Low Voltage ProtectionYesOutput Short Circuit ProtectionOutput auto cut off,Buzzer beeping EMI FilterYesTel/Fax/ ...