What is the difference between the NFS-640 and the NFS2-640?

NotifierNFS2-640Mar 23, 2026
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The NFS2-640 is the updated version of the NFS-640, featuring a CPU2-640 processor, support for high-speed networking, and compliance with newer safety standards. While both systems support 318 points per SLC loop, the NFS2-640 introduces support for wireless mesh technology and mass notification.

FeatureNFS-640NFS2-640
CPU BoardCPU-640 [2]CPU2-640 [1]
Primary DisplaysKDM-2 or NCA [2]KDM-R2 or NCA-2 [1]
Max Network Nodes103 (Standard) [2]200 (High-Speed) [1]
UL StandardsUL 864 [2]UL 864 9th Ed / UL 2572 [1]
Wireless SupportNot listedSWIFT Wireless Mesh [1]

The NFS2-640 is certified for UL 2572 (Mass Notification Systems) and supports SWIFT wireless gateways for up to 50 devices (Page 1, 3) [1].

Additionally, it supports the FCO-851 advanced multi-criteria Fire/CO detector, which was not available for the original NFS-640 (Page 3) [1].

AI-generated — verify against your panel's documentation and applicable codes (NFPA 72, local AHJ).

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