As far as I know, based on the wording of the information that's out there, the controller merely adjusts the overall feed rate of the auger... that is, I don't believe there's actually a temperature probe or anything, it just feeds pellets in a little faster , or a little slower, depending on where you have the dial set... you will have to adjust it to the point where it produces the temperature you desire, and then hope the weather doesn't change too much while your cooking.