The Auburn E5-I-2-1 Ignitor with 12" probe is a durable ignition component designed to provide fast and dependable burner startup in gas-fired heating systems. It works by generating high heat at the probe tip to ignite the fuel-air mixture, ensuring safe and consistent combustion. https://www.partshnc.com/e5-i-2-1-auburn-auburn-ignitor-w-12-probe