MaxGreen MGO-PX1K 1 KVA Online UPS has Input Nominal input voltage 220VAC ,Voltage Range 110V~300V Halfload 176V~300V Full load, Frequency Range 40~70Hz,Power Factor 0.99@Full Load. Output voltage 220VAC,Voltage Regulation 1%, Frequency(Sync.Mode) 47Hz~53Hz. Frequency(..