A lot of money for non-functioning electronic

I'm short, after my experiences with Hama DECT Repeater initial coupling to a Fritz box succeeded in felt 67th attempt. Unfortunately, with the exact same negative result as in the Hama Repeater. Then it was no longer possible to place the repeater in registration mode, because I wanted to test whether there was a Gigaset SL400 phone works!. I suspect that the electronics in the much cheaper Hama is the same, because of the completely incomprehensible instructions text is almost the same. So stay away from this part.