Irobot Roomba Virtual Wall Lighthouse item 81002 - $30 (Collierville)

Brand New Virtual Wall Lighthouse uses an invisible infrared signal to guide Roomba through room-to-room cleaning.
Contains Roomba in one room until the room is completely vacuumed then directs Roomba to clean the next room.
Also blocks off-limit areas in your home.
Only compatible with select Roomba 500 Series models, Roomba 780 and 790 and Roomba 877 and 880.