Roomba Virtual Wall Lighthouse OEM 81002 IRobot For 780 790 877 880 572 573 Used | eBay
Virtual navigation wall for irobot roomba lighthouse for irobot 570,571,572,580,610,611,780,790,880 Vacuum Cleaner Parts
iRobot Roomba Model 81002 Lighthouse 500 790 780 877 880 Virtual Wall White | eBay
3 iRobot Roomba # 81002 Lighthouse Virtual Wall For 500 790 780 877 880 Black | eBay
Got this roomba as a gift. Also received these lighthouses from another friend… are they compatible??? How do I get them to work? When I put batteries in lighthouse the led flashes