1,stand alone torch height control 2,suitable for all plasmas on market, ... controller.......just give us your controller manual, we will wire it for you.Key features as follow, A, Auto Initial Height Sensing(IHS)Torch ... . History of HYD Torch height controller1996 made first capacitive torch height controller (Analog circuit);1998 made first arc voltage torch height controller (Analog circuit);2003 ...