From The RadioReference Wiki

BC-RH96 Remote Head

Controls all functions of the:

Including Volume and Squelch. Just add a remote speaker for complete remote operation.

X and Y dimensions are the same as the BCD996T/BCT15. Z (depth) will be about 2 inches and the power/data jacks are on the back. There will be a jack for firmware updates that faces downward.

There are channels on the back for routing the wires.

Available February, 2007.