SEVENSTAR ST 100 W U/D ST 100 Watt Transformer Up/Down 110-220 Volt Step Up/Down transformer converts 220-240 volts down to 110-120 Volts or 110-120 volts up to 220-240 volts. Four input voltages selectable: 110V/200V/220V/240V All range fuse protection with two spare fuses included Safety break switch to power on and protect from electric shock