MCL 82
MASTER CONTROL LINK
TRANSCEIVER BOX
Beosystem 5000 and Beocenters 7000/7700 - through terminal MCP5000 and MCP7700 - offered two-way remote control communication through MCL82 and up to four rooms could be linked.
It was superseded by the later MCL2 system which used Beolink 1000 codes.