Licensed firmware update for the application controller for enabling a BACnet FDR and BBMD capabilities. This licence is required to enable these BACnet capabilities on a controller. If applying licensing to the zc-controller-pro-3, 3 X DALI line controllers, you will require 1 X license for each DALI line that integrates to BACnet.

For more information on what FDR (Foriegn Device Registration) and BBMD (BACnet Broadcast Management Device), please read the following article:
What is the BACnet FDR licence for?