That's the best I can provide until tomorow.
It says sensor to the left and not much else.
As for powersupply I think that a MCL2AV type can handle it otherwise its easy to get. You only need to provide the right voltage to iit.
Can you post a picture of the MCL beolab kit?
I have not gone much further with my box allthough its setup for use with BM8000 inside.
I have yet to do some research on that cable with the blue LED as I have not seen any but not really tried to find one.
MCL82 link boxes do come up but I have seen in a B&O manual that each box needs to be modified but not how.
What kind of setup do you have in mind? Which Beomaster?
You need some of the cables for the BM8000 and others for the other recivere were the box can also be used.