The BA-1R5414-A4 is part of the Honeywell PrimUS 50 Burner Management System. This is a control module that is used to help create an efficient, safe, and reliable combustion process. It monitors ignition and flame, monitors rate-of-rise, monitors high temperatures, and provides protection during operation. It is used for commercial and industrial applications such as boilers, water heaters, furnaces, and kilns. It is rated for class B applications, has communication interface's such as Modbus, Ethernet and EtherNet/IP, and it is DIN rail mountable.