The E.A.H.S works by measuring welding current, comparing it to a target value that has been set by the operator and automatically adjusting the height of the welding gun to maintain the target welding current. The Model GK-203-400 is a standalone unit meaning it does not interface with the wire feeder. The arc activation trigger signal of the welding equipment that is used to start/stop the welding process must come from a separate piece of equipment, for example customer supplied control ofmore