... -4IEC320-6IEC320-3&terminal blockIEC320-4IEC320-6IEC320-3&terminal blockBatteryTypeSealed,Maintenance free,Lead-acidNominal DC voltage36VDC96VDCQuantity3 pieces8 piecesDepends on the requested back-up ... and vice versaLED indicatorsStatusLoad level/Battery level, Battery, Utility power,Inverter,Bypass,Overload,FaultAudible alarmBypass, On battery mode,Battery low ,Overload,FaultAcoustic NoiseAt 1meter ...