Lenz 22630 BMA Adaptor for block module BM3 (Link to Manual - I am sorry but this is German only but the pictures explain the connections needed)
This adaptor serves to connect signals with double coil (Solenoid) drives or motorised signals to the block-section module BM3. The signal drive systems must have automatic power cut off when the signal movement is complete - Fleischmann and Viessmann semaphore signals have this feature.
