The Prince Castle 197-140 Toaster Thermostat provides accurate temperature regulation for commercial kitchen equipment, helping maintain consistent toasting performance. This thermostat is designed to control heating cycles within a temperature range of 285–600°F by sensing internal heat through its 36-inch capillary tube. As temperatures change, it signals the system to cycle the heating element on or off to maintain the selected setting. Reliable temperature control helps prevent overheating, supports uniform toasting results, and improves energy efficiency. Designed for use in professional toasters, this thermostat serves as a practical replacement component that supports dependable operation, reduces temperature fluctuations, and helps maintain consistent product quality in busy foodservice environments.