Product review (4 stars): Good control
Temperature control.  The index mark on the bezel is 180 out of position for the unit I received. I think I could reverse it if I could get the knob off, but I'm afraid to pull any harder than I have or to pry it up, don't want to damage it.
Seems well made but for the trim.
I checked the operation by placing the sensor probe in a working freezer and the switch functions as expected.