... the capacity of theexternal battery bankBypassAutomatic transferOn overload and UPS failure Before UPS power-onDefault"NO",user adjustable to"YES" Voltage range80~264VAC ... bypass and vice versaLED indicatorsStatusLoad level/Battery level, Battery, Utility power,Inverter,Bypass,Overload,FaultAudible alarmBypass, On battery mode,Battery low ,Overload ...