This B&D garage door two channel transmitter. usually used for security parking in a block of units. One of the button controls the main entry door and another button controls a private garage door. Suit for B&D Controll-A-Door 4, Controll-A-Door 5, CADP, CADR
This remote has been discontinued and replaced by CAD603C .
This one has been upgraded to CAD605C.