Silent Knight SK-4224 (4-Zone FACP) Replacement Board

This is the Replacement Board for the Silent Knight SK-4224 four zone, 24-volt conventional fire alarm control panel. The SK-4224 has a 2.5 amp 24 VDC power supply, dedicated alarm and trouble relays, four Class B Style B inputs and two 2.5 amp Class B Style Y outputs. These can be programmed to operate as two Class A style D inputs with one 2.5 amp Class A Style Z output when Class A operation is desired. The panel also features a notification expansion input that allows the SK-4224 to act as a 2.5 amp ADA notification expander. OPTIONAL COMPATIBLE EXPANSION MODULES: — SK-2884 Serial Driver Board (Used to interface all SK-4224 expansion devices to the SK-4224 panel) — SK-2880 Input/Output (I/O) Module — SK-2866 LED Annunciator — SK-2104 DACT