2 MCL82 receiver units and 3 IR receivers (+1 with no cord)
The MCL cable with the 3 pin Din connectors is 4’ long. While the wire linking the two boxes is over 14’ long.
I could only test these on a broken Beocenter 7700. But they worked for as much as I can test.
I purchased them over a year ago to use on a Beosystem 5500 which was not compatible, (I needed a Beosystem 5000. But the person I bought them from guaranteed they worked.