Simplex Grinnell 4009-9201 NAC Extender is a NAC Extender module for the Simplex 4009 fire alarm control system, identified by part number 4009-9201. It functions as an expansion device to extend the panel’s Notification Appliance Circuit (NAC) on compatible 4009 systems. This accessory is used in fire alarm installations that require the NAC extension capability within the Simplex 4009 platform.
