Best Buy: iRobot Virtual Wall Lighthouse for Select Roomba Vacuums 80201
iRobot on Twitter: "@Linda_FB The Roomba 88 uses Virtual Wall lighthouses. The Scooba can only use Virtual Walls. The Scooba is not compatible with Lighthouses." / Twitter
iRobot Roomba 500/600/700/800 Series Auto Virtual Wall Barrier Sensor Lighthouse – ASA College: Florida
Is the i3+ compatible with the 800's virtual wall? : r/roomba
Virtual Walls vs Lighthouses – What are the Differences? (Updated!) | The WiredShopper