guys..the reason I want to add a temp controller to my MES 30 is because it fluctuates in temp far too much for my liking. It swings a good 20-30 degrees over the course of a smoke. I will add a PID controller to hopefully hold that swing to a few degrees..or even better.
I got my Masterbuilt Electric smoker from Cabela's.....it does have the digital temp unit on top of the smoker.
i have a question, When you say it swings 20 - 30 degrees during a cook . What are you basing this on ? probe temps or the cabinet temps that dysplay on the digi readout?