The Baso K15DA-24 Screw-In Thermocouple is a 24-inch safety-sensing device designed to monitor pilot flame presence in heating equipment. It works by generating a small electrical signal when heated, allowing gas valves to remain open only when a stable flame is detected. Visit The Website: https://www.partshnc.com/k15da-24-baso-gas-products-24-thermocouple-screw-in https://www.partshnc.com/k15da-24-baso-gas-products-24-thermocouple-screw-in