Product review (4 stars): Two stage temperature controller for Homebrew Fermentor
Received product promptly and in working order.  purchased a few extra parts and made a nice fermentation chamber out of an old refrigerator.  A couple of downsides is that cord for the sensor (thermistor) is very short however it can be extended with phone or ethernet cable.  The other downside is that when I priced an RTD to switch to it cost more than the controller.  Thermistor works just fine.