The Southbend 1056400 Braising Pan Coaxial Thermopile 36" 250–750 mV is designed to generate a small electrical signal from the pilot flame to support proper gas valve control.A reliable heat-sensing component that helps maintain safe and consistent operation in commercial braising pans.As the pilot heats the thermopile, it produces millivoltage that allows the system to stay energize... https://partsfe.com/thermopile-for-southbend-part-1056400