iRobot's new 'robust' Roomba - The Roomba 560 comes with a home base for recharging the robot, a power cord, two rotating brushes that can be removed for cleaning, a dustbin with filter and two 'Lighthouse' beacons to control movement from room to room. The Roomba 560 also has a round silver sensor in the brush cradle. This sensor on both the 530 and 560 models senses the amount of dirt blowing past it and adjusts the robot's movement accordingly. The sensor will keep the Roomba vacuuming over a particularly dirty area until it senses less dust being taken in.