How do I set up the Auto-Set feature on the Miller Matic 211?

To use Auto-Set mode, rotate the Wire Speed control into the blue/green area corresponding to your weld wire diameter (.030 or .035), and the Auto-Set light will turn on. Then rotate the Voltage control inside the blue/green scale for the applicable material thickness (24 gauge to 3/8 inch), and the unit will automatically provide the appropriate voltage for the selected wire diameter and material thickness.