... -50KVA Output isolation transformer, RS232 Name : Online low frequency UPS power supplyModel NO.:FR-UK3120,FR-UK3130,FR-UK3140,FR-UK3150Topology ... etc.LED indicates running statusAlarmLow battery, abnormal AC input, overload, UPS failureProtectionLow battery, overload, output over voltage, short-circuit, over ... ×800×1180Weight(Kg)Standard/Long backup250/130320/195205225273304 online UPS power supply