Review on Velleman MK138 Thermostat: Effortlessly Control Your Ambient Temperature by Josel Lambert

I used this unit to turn my 'chest freezer' on and off to maintain a 'fridge' temperature in the chest freezer thereby converting it to a horizontal fridge. A temperature probe (sensor) is placed inside the freezer to monitor the internal temperature. This device works so well that the temperature inside. Never changes! It has been working for over two years and is still working. As a note. This idea can cut your energy bills by at least 50% to run this type of fridge and no freezer modifications are required!