Here are a few screenshots of my current setup. The custom cards for the virtual keypad and group status are available for download in the download section.

Demo page of Home Assistant cards for Galaxy Gateway
Home Assistant interface
Galaxy Gateway web interface overview for all settings from RS485, SIA4 control and date time synchronisation
Web interface
Galaxy Gateway profile view
Galaxy Gateway Profile view
Galaxy Gateway top view
Galaxy Gateway Font view
Galaxy Gateway back view
Galaxy Gateway Back view