1, UPS Inverter 2,With built-in AVR function 3,Input voltage range: 140V~275V 4,Output: ... With Powerhero EPSI series pure sine wave UPS(inverter) integrated Frequency automatic tracking technology, gives the best power ... mainWave formPure sinve waveWave distortion≤ 3%ProtectionOverloadYesHigh temperatureYesOutput high/low voltageYesBattery low voltageYesBatteryOver-charge, over-discharge, reversed ...