NFS2-3030 CPU with 640-character display; Required for single panel (one CPU2-3030) systems. Includes: CPU, 640-character backlit LCD display, QWERTY programming and control keypad, installation, programming & operating manuals. Supports one to 10 signaling line circuits (up to 5 LCM-320 and 5 LEM-320). Order one per system or as necessary (up to 103 network nodes) for networked system. Requires top row of a cabinet.