- 640-character Liquid Crystal Display with backlit control.

- On-board input, output, and status indicators to support diagnostics.

- Software upgrades and foreign-languages character sets

  via serial port from a panel or other device using the Remote Data Port (RDP) interface.

  Upgrades do not require the replacement of any programmable devices.

- Rubberized keypad.

- Input for AKS-1B key switch.

- Fits in two ACS annunciator module locations.