good control pedal, i use it on my lotos 200 a/c - d/c hifric welder, it's a much more accurate control of the amp than factroy, you just need to make sure the pins to the potentiometer are correct, my Factroy started at 55 amps on an AC TIG, this one starts at 11 amps on an AC TIG, runs up to 200 amps, this is probably the best foot pedal I've ever used on a TIG welder just gotta see how it is keeps ok i have had this thing for about a month and have changed the foot control potentiometer from