Function:Pulse TIG/MMA Welding Aluminum. Voltage(Frequency):110/220V±15%(60Hz)for US machineor 220V±15%(50Hz). Rated Input Power:5.5KW. Pulse Width Ratio 0.1–0.9. 4 IN 1 Multifunctional machine? -SUPER225 is an AC TIG/DC TIG/pulse TIG/MMA Multi-function welding which adopts the most advanced IGBT inverter technology. Extensive pulse function? – TIG PULSE – prevents materials from burning through and reduces deformation due to heat, especially suitable for welding thin plates whose material may only be heated a little. Adjustable parameters are: Pulse current, cleaning pulse width, pulse frequency, etc. Gas delay protection? : When welding is stopped, automatic delay of 1-10S prevents metal oxidation and makes the surface smooth and shiny. Remote Control? : You can use a 5PIN pedal to remotely adjust the voltage and current, saving time and effort. 2T/4T (TIG)? :determines the control of the operating mode and provides extended control over the current flow. Are you looking for something similar? See our other items!