... and flexible for future expansionHighest reliability and maximum performance for power sharing and redundancyEquipped with Maintenance Bypass Switch 1.SPECIFICATION ... time0 msMaintenance Bypass SwitchYesLED indicatorsStatusLoad level/Battery level, Battery , Utility power, Inverter, Bypass, Overload, FaultAudible alarmBypassAlarm beeps every two minutesBattery dischargeAlarm beeps ...