The Nor-Lake 001193 Refrigerator Temperature Control provides convenient temperature adjustment for compatible commercial refrigeration equipment. It includes a shaft stem, dial plate, knob, and 66" capillary tube for temperature sensing. The control works by detecting changes in cabinet temperature and regulating the refrigeration cycle according to the selected setting. Proper tempe... https://partsfe.com/control-temperature-for-norlake-part-001193