iRobot Roomba 500/600 Series Top Bumper IR Sensor - Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>OEM replacement IR sensor</li><li>This detects the virtual walls， charging dock and remote control</li><li>Works with 500 and 600 Series</li><li>700 and 800 series use a slightly different version.</li><li>Message me if you have 700/800 Roomba</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41HI-4Mg8EL.jpg" noproxy>