The Honeywell Thermal Solutions RM7885A1015 Semi-Automatic Primary Burner Control is a combustion management device designed for compatible commercial and industrial heating systems. It sequences burner operation by coordinating ignition, flame monitoring, and safety shutdown functions according to system requirements. Commonly used in commercial boilers, furnaces, and industrial burn... https://www.partshnc.com/honeywell-thermal-solutio-rm7885a1015-semi-automatic-primary-burner-control-start-stop-input-5-leds-includes-dust-co-120v