Fire-Lite ZNAC-4 NAC Option Module, for ZNAC-4 Class A (Style Y)

ZNAC-4 notification appliance circuit (NAC) option modules are Class A conversion modules which mount to J3 connectors on the upper right side of the FCPS-24 (field charger/power supply) circuit board. These modules allow the FCPS-24 to support Style Z (Class A) NACs.