The Bradford White 239-49791-00 FV Sensor Switch Harness is a genuine OEM component designed to connect the flammable vapor sensor to the water heater’s control system. It is used in Bradford White gas-fired water heaters, including select TTW and M1TW/M2TW models with applicable serial numbers. The harness transmits the sensor’s signal to the gas control, helping detect potentially h... https://www.partshnc.com/239-49791-00-bradford-white-harness-fv-sensor-switch