ARC250GS features: Digital Meter to Pre-Set and Display Welding Current, Arc-Force for Anti-Sticking, Hot-Start to start the Welding Arc Smoothly, VRD Function --- Safe for Welders, Outstanding Arc Stability with Low Spatter, With 2 Input Voltage Options: 1P 200V and 2P 380V, Dust-Free Cooling System with Upgraded Duty Cycle, With Advanced Single IGBT Technology.