In a spares thread, the author included a picture of the stock thermometer on the smoker graphically showing its inaccuracy and wanted to point it out and save it to a Wiki to refer to!
He wisely purchased a independent thermo showing the true temp, demonstrating the need to not trust the unit that comes with your unit!
This is on the smoker unit:
This is the actual temp:
Please read the entire thread, if anything to drool over some great spares, lol!