The auxiliary module LED 99 is needed, when no display is integrated respectively if MFD 99 VIII is employed as full-size luminous field. The module is installed instead of the display.
| Fixing | |
| Clip fixing | X |
| Connectivity | |
| Screw terminal 2 poles | 0.1 - 1.5 mm² |
| LED | |
| U | 12 - 30 V DC |
| I | 80 mA |