All YesWelder MIG welders are not compatible with a foot pedal as there’s no two-pin plug for it on the welder panel and it uses valve-controlled TIG torch. TIG-205DS already comes with a two-pin foot pedal to control the HF start on and off.  TIG-A250P-AC/DC could use a five-pin foot pedal to control the on/off of the gun torch and the amperage while welding. And amp changes will not dispaly on the panel.(The foot pedal is optional and need to purchase separately.）