Thermocouple 600Mm An402P Equiv.309A

A heat-sensitive sensor used to monitor and detect the presence of a pilot flame in gas-powered appliances. It generates a small electric voltage when exposed to heat, which signals the gas valve to remain open, allowing the appliance to continue operating. If the pilot flame goes out, the lack of heat causes the thermocouple to stop generating the voltage, leading to the gas valve closing automatically as a safety measure, preventing gas leaks.