The Adpaterleitung looks robust and determined its purpose.
Alleridngs what described nowhere that the cable has a thickness of 11mm !!! has.
It should not really a problem, the auzuführen in the item description with.
Thus the use of the cable to the safety box falls flat, as this will only lead to max. 9mm support.
However, this was not even reported in the safe box. Very annoying.
Conclusion: The adapter cable is ok, but not in connection with the safe box from Brennenstuhl