Product review (4 stars): It's been useful.
I've been using this for the longest of my temp controllers.  I like it but its an analog so I don't trust it as much as my digital for accuracy.  To use I have to dial the setting to the near temp which may be about 5-8 degrees off.  So whatever the setting says on the dial the freezer may kick on anywhere in that 5-8 degree range.  I like it but I will probably go with another digital one that costs much less and more accurate.  Giving it 4 stars because I knew it was analog but I didn't know the variance was so great.