Electrical Characteristics Technology Online double conversion Input Voltage 208 / 220 / 230 / 240V Input voltage range without using batteries 100 – 300V Output voltage 208 / 220 / 230 / 240V ±1 % Output THDU <2% for 100% linear load, <6% for 100% non-linear load Input frequency range 40Hz – 70Hz, 50 / 60Hz autoselection Efficiency at inverter mode up to 91% in online mode, up to 97.5% in high efficiency mode (ECO mode)