iRobot Roomba MODEL - 531 - Robotic Cleaner Dirt Detect, As Is | eBay
HQRP AC Adapter for iRobot Roomba 531 533 536 537 551 561 563 564 571 577 578 600 611 790; 800 / 880 Series [Vacuum Cleaning Robot]; 80501 APS #80701 Power Cord Replacement + Coaster
Synergy Digital Vacuum Cleaner Battery, Works with iRobot Roomba 531 Vacuum Cleaner, (Ni-MH, 14.4V, 4000 mAh) Ultra High Capacity, Compatible with Auto Cleaner 11702 Battery - Walmart.com
iRobot Roomba 531 - ROBOTIC VACUUM CLEANER - w/dock, tested good [0131210516] - $45.00 : EdsGoodStuff, it's all good
iRobot Roomba 531 (Robot curatenie) - Preturi
Amazon.com: AC Adapter for iRobot Roomba 531 533 536 537 551 561 563 564 571 577 578 600 611 790; 800/880 Series [Vacuum Cleaning Robot]; 80501 APS #80701 Power Cord : Electronics
Handleiding Irobot Roomba 531 (pagina 1 van 14) (English)
iRobot Roomba 531 - YouTube
Roomba vacuum cleaners have names: iRobot CEO on people's ties to robots.
User manual iRobot Roomba 531 (English - 19 pages)