My #2 if set at 225 will hit maybe 245-250 as the peak.
If I set it at 250 it cuts out at then but the heat continues until about 280, drifts back down to 240ish and it kicks back on.
The first real smoke I did was a chicken @250, and I had a water pan on the shelf. I could not get it up to 250, and the light was going off.
So I feel it was getting to temp, but my probe was having a hard time picking it up. I was a little worried. The chicken came out great though and all was fine.
Been happy with my new toy.