Review on Enhance Cooling Efficiency with Emerson 1609 101 Refrigeration Temperature Control by Bobby Posner

I have used this temperature control model many times in commercial refrigeration applications. I've never had a problem other than eventually wearing out/failing. The adjustment is made with a screwdriver. Having to constantly change the temperature can be cumbersome and you should look for another controller. Also, this controller does not include a thermometer display that shows the actual temperature inside the device to be cooled (refrigerator, freezer, etc.). The applications I've used this for are mostly set and forgotten when the temperature doesn't need to be set. Adjustment, so no knob is required. The lack of a button also helps people avoid having to make adjustments every time they feel like "the temperature is wrong".