iRobot 80201 Robotic Vacuum

The Virtual Wall Lighthouse uses an invisible infrared signal to help Roomba 500 Series robots achieve the most efficient and thorough room-to-room cleaning possible. Use in Lighthouse Mode to contain Roomba in one room until the room is completely vacuumed before Roomba moves on to the next room.Use in Virtual Wall Mode to block off-limit areas in your home. Compatible with robot SKUs 53501, 54001, 55001, 56001, 56201, 56501, 57001, 57101. Activates automatically with scheduling. Requires 2 C batteries (not included) To use in Lighthouse mode, adjust to Lighthouse, set the distance of the door opening and place the Virtual Wall Lighthouse outside of the doorway to the room you want Roomba to clean. The Lighthouse will contain Roomba in one room to vacuum it completely before moving Roomba on to the next room. To use in Virtual Wall mode, adjust to Virtual Wall, set the distance of the door opening and place the Virtual Wall Lighthouse outside of a doorway or other opening that you do not want Roomba to cross

The Virtual Wall Lighthouse uses an invisible infrared signal to help Roomba 500 Series robots achieve the most efficient and thorough room-to-room cleaning possible. Contain Roomba in one room until the room is completely vacuumed before moving on to the next or block off-limit areas in your home. For use with Roomba 500 Series robot models 535 and up.