I have spent about 4 hours researching PIDs, relays and 240v. I don't think it has helped clear anything up for me so hopefully you can help. As usual, I want to be cheap so I have been looking at PIDs on ebay as well as some other websites. I have a box of 240v elements on its way to me for the great price of $0.00. I want to put one in my plywood smoker I built a few weeks back for sausage, jerky and cheese. I understand hooking up the PID to a relay, but that is where I am getting stuck. The relays I am seeing have a terminal for a single leg. Do I need two relays for both hot legs? Is there a special relay designed for 240V? Or do I wire one leg to the relay and wire the other directly and rely on the PID to cut off the second leg which would interrupt the 240v circuit? Any help would be appreciated!