Pictures of these systems have been very elusive and have only recently started to appear on e-bay acutions.  Many of the below pictures are grabbed from expired auctions.  I have identified three types.  The Schwerer Leuchtfuer, which rotated with 15 RPM, and two other types of rotating beacons,  for ease of reference Type 1 and 2.  It is evident from the pictures and the KTB of II JK, that some if not all of these beacons were mobile.

Schweres Leuchtfeuer.

Type 1. 

Type 2