It is a torrefattori by coffee-tech engineering. It isn't pre-programmed. The temp. probe is, I believe, for temperature in the drum. I dump the beans in around 150-180 C, depending on what I'm roasting. I usually watch the temp closely after the first crack, and turn off the heat when the temp gets close to 200 C. I usually decide by visually inspecting the beans, when to turn the heat off, and the cooling fan on. It is like cooking on electric heat, you have to get the feel for how long things will keep cooking after you turn the heat off. It probably is very different from a larger gas roaster, but for now it is working for me.
I find myself roasting 3-5 hrs a day though!!!!