Product review (5 stars): Very easy to use
Gets the job done for converting a chest freezer to refrigerator. It acts as an "on-off" switch and is plug and play - plug the chest freezer into the controller's plug, plug the controller into the wall outlet, put the thermocouple in the freezer. Only runs the freezer when the temperature rises above the set point. Very easy to use. Highly recommend if you're not very concerned about a high level of temperature control.