Notifier NFS-640 intelligent Fire Alarm Control Panel is part of the ONYX® Series of Fire Alarm Controls from NOTIFIER. As a stand-alone small-to-large system, or as a large network NCA 640-CHARACTER DISPLAY FEATURES: • Backlit, 640-character display. • Supports SCS Series smoke control system in both HVAC or FSCS modes (not UL-Listed for FSCS). • Printer and CRT EIA-232 ports. • EIA-485 annunciator and terminal mode ports. • Alarm, Trouble, Supervisory, and Security relays.