The Detroit Radiant MARK10DX-117 120V Ignition Module is an essential component of any HVAC system, responsible for starting the heating process. It provides the spark that ignites the gas mixture in your furnace, boiler, or water heater. The Detroit Radiant MARK10DX-117 120V Ignition Module small module is compatible with a wide range of HVAC equipment, making it versatile. #Detro... https://www.partshnc.com/mark10dx-117-detroit-radiant-120v-ignition-module