The HL85B Hidden Link IR Receiver is a small only 2.00in x 3.15in x 0.70in) shelf-top infrared repeater assembly. It includes an IR receiver and a CB12 Connecting Block. The Hidden Link IR Receiver is equipped with a 7-foot cable and a 3.5mm stereo mini plug, which is plugged directly into the “IR RCVR” jack on the CB12. It can also be plugged into the “AUX” or “IR RCVR” jack of other Xantech connecting blocks, such as the models 789-44, CB60, and 791-44. The Hidden Link IR Receiver is primarily intended for use in installations where the connecting block is within reach of its 7-foot cable – as when installing the Hidden Link IR Receiver in a cabinet where the controlled equipment is behind closed doors.