... Load)(176--276)VACFrequency(46.5--55)HzPower Factor≥0.90Current Max.6A12A16A30A47APhasesSingle Phase+N+GNDOUTPUTVoltage220/230 ... DischargeBeeping sound every 4 seconds after utility power failsBeeping sound every second if battery approaches ... IndicatorsLCDVFD/LCD Indicator StatusInput/Output Voltage,Frequency,Output Power,Battery,Utility,Inverter,Overload,Fault,BypassCommunication PortRs232/ ...