The Dean 1149 Thermocouple detects pilot flame heat and generates a small electrical signal used by compatible commercial fryer safety systems. Measuring 24 inches in length, this sensing component connects the pilot assembly to the gas safety control. When exposed to the pilot flame, its heated junction produces a millivolt output that allows the safety valve to remain open. If the f... https://partsfe.com/1149-frymaster-thermocouple/1-1149.html