Can the NFS-320 be networked with other Notifier panels on NOTI-FIRE-NET, and what module is required?

Yes, the NFS-320 is networkable on NOTI-FIRE-NET in both standard and high-speed configurations [1].

Each panel requires either a Network Communication Module (NCM-W/F) for standard networks or a High-Speed Network Communication Module (HS-NCM) for high-speed networks (Page 4) [1].

Standard networks support up to 103 nodes, while high-speed networks support up to 200 nodes, including compatible panels like the NFS2-3030, NFS2-640, and NCA-2 [1].

Note that networked systems require at least one NCA-2, NCS, or ONYXWorks annunciation device (Page 3) [1].