<strong>02. </strong> The dual input power capability helps put this Miller Mwillermatic 211 Auto-Set with MVP welder a step above its competition. Two plugs are given; one for a 120-volt plug, and one for the 230-volt plug. Simply attach whichever plug you’re going to use and plug the welder in. Note that you will not be able to weld as thick of material on 120 volts.