The Fireye MBCE-110FR-1 Flame Sensor Module is an electronic flame monitoring component designed for compatible Fireye burner management and combustion control systems. Operating on 120 VAC, it detects and monitors the presence of a burner flame, providing feedback to the control system to support safe combustion operation. Used in commercial and industrial boilers, furnaces, and heat... https://www.partshnc.com/mbce-110fr-1-fireye-120vac-flame-sensor-module