The Adcraft 21424 Thermopile helps generate the electrical power needed to operate compatible gas appliance safety and control systems. Designed to produce an output of 250–750 millivolts, this component converts heat from a pilot flame into electrical energy through the thermoelectric effect. The generated voltage can power compatible gas valves and control mechanisms, helping mainta... https://partsfe.ca/21424-thermopile-2-lead-36-250-750-mv/2-21424.html