iRobot Roomba 690 Vacuum Cleaner with 2 Virtual Walls, Batteries, and Filters | eBay
iRobot on Twitter: "@Linda_FB Unfortunately the Virtual Wall Lighthouse will not work with the Scooba since it is a different frequency then a Virtual Wall." / Twitter
Amazon.com: iRobot Roomba Authentic Replacement Parts - Dual Mode Virtual Wall Barrier (2-Pack) : Home & Kitchen