Keep your Roomba where you want it with the iRobot Roomba Virtual Wall Lighthouse. The Lighthouse keeps Roomba contained in one room until cleaning is finished, then uses infrared technology to automatically allow it into the next room. Or simply set it to Virtual Wall mode to keep your Roomba out of off-limits areas of your home. iRobot Roomba Virtual Wall Lighthouse Features: For use with Roomba 500 series vacuums (sold separately) Helps Roomba navigate around your home and find the home base Optional scheduling - set the Virtual Wall to activate on its own 3 adjustable settings - fits doors up to 8+ feet wide Measures approx. 3.5"Lx 2.6"W x 4.25"H Power Source: 2 "C" batteries, not included Compatible Roomba Models: 532 Pet, 550, 560, 610 Pro Made in China Comes with a manufacturer's 1-year limited warranty