# The SDEC LCD Driver

The SDEC LCD modules are fitted to the Watchguard Firebox firewall appliances. Watchguard identifies these units by the X-Core, X-e and X-Peak product lines. The model number indicates a software license level, and has no bearing on the hardware configuration.

## Features

The SDEC LCDs are interfaced to the appliance using a parallel port. All lines are hard-wired by Watchguard. The LCD displays are 20 characters wide and 2 lines high, and have 4 buttons: `Up`, `Down`, `Left`, and `Right`. The SDEC model number is `LMC-S2D20-01`. There is a back light that can be controlled by software. Due to its low half-life, the driver tries to keep the light off a short while after buttons have been pressed.

For more detailed information about the SDEC LCD, locate the technical and programming guide LMC-S2D20-01.pdf. The manufacturer web site is: SDEC home page