... Bypass breaker; DC Fuse, Fan, redundant power supply; temperature sensor, EPO (Emergency Power Off), audible alarmsSoftware ProtectionsDischarging batteries, Battery ... voltage, high output voltage, DC fuse open, %v power supply fail, 13.5 v power supply fail, inverter overvoltage, 200% overload ... .DimensionDimensionL520XW1670XH780mmWeight (without batteries)278KG 220v uninterrupted power supply ups