The Southbend 1189311 Flame Sensor 90° is a reliable safety component designed to ensure consistent flame detection in commercial gas equipment. This flame sensor monitors the presence of a burner flame by detecting the electrical current generated when the flame is established, signaling the control system to keep the gas valve open. If no flame is detected, it prompts the system to ... https://partsfe.com/1189311-southbend-flame-sensor-90-deg