The WD TIG200ACDCP is a 240V square wave AC/DC TIG inverter welder incorporating full TIG functionality including AC balance control, pre gas, down slope, post gas, variable pulse parameters, HF Start with 2/4T trigger control. The HF arc start provides easy arc ignition leaving no tungsten inclusion and no contamination of the tungsten electrode. The Down slope and Post Gas combined with the 2/4T trigger function gives you control of the welder allowing you to control the start and finish of the weld process at a professional level. AC Balance control lets you set the AC TIG arc for cleaning of the oxide layer on aluminium and adjustment for a deeper penetrating weld. Addition of the Foot Control provides variable amperage adjustment during welding.