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  • NFS-640: DVC Digital Voice Command

    Each DVC Series model is a multi-featured audio processor with digital audio functionality that operates as an event-driven audio message...
  • NFS-640: Network Communications Module

    If networking two or more control panels or network control annunciators, each unit requires a Network Communications Module (NCM) or...
  • NFS-640: System Cabinets

    The control panel and modules are installed in a CAB-4 series backbox . There are four different sizes available, holding...
  • NFS-640: Circuit Board Components

    The following two figures illustrate the location of the various connections, switches, jumpers and LEDs on the CPU2-640/CPU2-640E and its...

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