The Q390A thermocouples sense the pilot flame on standing pilot gas-fired heating systems. The pilot flame heats the tip of the thermocouple, producing a temperature differential between it and the base to generate 30 millivolts.

Honeywell Thermocouple, Male Connection, 30 mV, 0.02 Ohm Resistance, Liquid Propane Gas, Natural Gas, 24 in Lead Length, Domestic/Import: Import

Note: This is a closeout item with limited stock available. Please contact your branch for availability.