... When pole wrong, AC input protection against over and low voltage, Output protection against over load, shor circuit Protection, DC input ... input)Voltage120/220/230/240VAC(bypass mode sync to input)Voltage Regulation±10%rms(bypass mode sync to input)Frequency50Hz±0 ... Battery Transfer10V for 12V,20V for 24V,40V for 48VHigh Voltage Alarm16V for 12V,32V for 24V,64V for 48VMax Charging ...