The TRUE 800306 Refrigerator Cooler Control helps maintain consistent cooling temperatures for dependable refrigeration performance. This temperature control assembly includes a knob, mounting plate, and a 3/8" x 1-1/2" coiled sensing bulb that monitors internal cabinet temperatures. It works by detecting temperature changes and activating or deactivating the cooling system as needed ... https://partsfe.ca/800306-true-cooler-control-9531-48