iRobot Roomba Virtual Wall, 2003
For use with the Roomba intelligent robotic floorvac, this Virtual Wall Unit blocks open doorways up to 13+ feet wide!Compatible with Roomba FloorVac (Item #02001), sold separatelyEmits a harmless, invisible infrared barrier up to 13+ feet wide that Roomba will not crossCan be placed in a doorway to confine the sweeper to one room, or be used to divide a large room in half.The Virtual Wall Unit keeps Roomba in the room you want cleaned.Use extra Virtual Wall Units to:Block multiple open doorways OR Clean one portion of an extra-large roomRequires 2 "D" batteries (not included)