Product review (5 stars): it works
I bought this controller to control the temperature of a non frost-free refrigerator for fermenting homebrewing.  I've been using this for several months and found it's a simple set up that works great.  I did find the temps in the frig would overshoot below my set point but found there was a tray used for a baffle between the freezer box and the frig compartment.  After I removed the tray, this set up controls spot-on.