... Inverter charger 2,With built-in AVR function 3,Input voltage range: 140V~275V 4,Output: 220V, 50/60Hz 5, LED graphic With ... Powerhero EPSI series pure sine wave UPS(inverter) integrated Frequency automatic tracking technology, ... & loading & batteryInputVoltage140~275 VacFrequency45~65 HzOutputVoltage220Vac ±1% for inverter; 220Vac ±8% for regulatorFrequency50/60 Hz ± 0.5Hz, ...