Digital automatic coupling

It resembles the Scharfenberg coupler with extra contacts to join electrical circuits (power, detection and control) and air hoses.

The function level DAK-4 must connect the e-coupler including electric supply (400 V) and digitial sockets.

Further development should enable electrical uncoupling both from the train and from a tablet or hump computer.

This is essentially software development with high safety requirements.

These have a maximum draw gear load well in excess of that possible with the DAC, say 1800 m instead of 750 m.