The Noritz SBF7103 Burner Sensor W/Gasket is a replacement sensing component designed to monitor burner operation in compatible Noritz tankless water heaters and heating equipment. The sensor detects burner-related conditions and provides feedback to the control system, helping maintain proper combustion and safe operation. Supplied with a gasket, it also supports a secure, properly s... https://www.partshnc.com/noritz-sbf7103-burner-sensor-w-gasket