iRobot Roomba Lighthouse Virtual Wall Model #81002

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.