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 and operating manuals. Supports one to 10 Signaling line circuits (up to five LCM- 320 and five LEM-320). Order one per system or as necessary (up to 200 network nodes) for a networked system. Requires top row of a cabinet.