... of the UPS Site wiring fault warning On-battery power-on function Smart RS232 communication interface Intelligent slot ... dischargeBypass Automatic Transferon overload and UPS failureBefore UPS Power-onDefault NO, user adjustable to YESVoltage Range80~264VAC ... level / Battery level, Battery , Utility Power, Inverter, Bypass, Overload, FaultAudible AlarmBypass, On battery mode, Battery low, Overload, ...