... can save your space and installation cost with less battery.ModelHR4000HR4000LHR5000HR5000LHR6000LHR6000LCapacity4KVA4KVA5KVA5KVA6KVA6KVAPhaseSingleInput power factorAbove 0 ... %ProtectionOutput short circuit, Overload, Output low voltage, Battery low voltage, Over-temperature, etccommunicationRS232(Standard),RS485 ... *462*329 4~6KVA with low price and double conversion online HF ...