My smoker is a Masterbuilt MES440/S
I am afraid I can make neither heads nor tails of the technical description/language explaining what a "PID" is, how it works, how it is used, or how I would figure out which one to get or how to implement it.
I am looking for an explanation in layperson's terms. Otherwise the info is not useful in my case.
In simple terms, when you do the rewire, you effectively bypass the built in controller (which controls the cooking duration and the temperature). The PID will be the controller when you plug your MES into it.