... itiation, resistance to interference, good power adjustment ItemMIG/TIG/MMA-200MIG/TIG/MMA-250 Input voltage(V) ±10%AC~220AC~220 Frequency ... for various acid and basic welding electrodes.-Three-function on MMA, TIG, MIG, automatic exchange on welding.-We can produce followed ... & Area(110V/230V/415V etc.) Three functions welder-MIG/TIG/MMA-250 inverter welder