The Delfield 2193910 Cooler Control provides accurate temperature regulation to help maintain consistent refrigeration performance. Manufactured by Delfield, this cooler control assembly includes a knob, mounting plate, and a 3/8" x 1-1/2" coiled sensing bulb for responsive temperature monitoring. It works by detecting temperature changes through the coiled bulb, which expands or contracts to activate internal electrical contacts that cycle the compressor on or off as needed. This automatic regulation helps maintain stable cabinet temperatures. Its integrated components support straightforward installation, dependable operation, improved energy efficiency, and reliable protection of stored products in commercial refrigeration units.