The Southbend 1182565 Thermocouple 48' 20-30MV 1900 Series helps support safe and reliable gas equipment operation by monitoring the presence of a pilot flame. This thermocouple is a temperature-sensing component that generates a small electrical signal, typically between 20 and 30 millivolts, when heated by the pilot flame. That signal is used to keep the gas safety valve open during... https://partsfe.ca/thermocouple48-for-southbend-part-1182565