Review on REEYEAR Replacement Bumper IR Sensor – Compatible with Irobot Roomba 700/800/900 Series – Enhance Roomba's Vision by Stacy Duncan

This item fits my model 880 but be prepared to take your room apart to replace this sensor. I highly recommend finding instructions or watching a video on how to replace this part. You need to go deeper into the room and for that you need a special triangular screwdriver or a 2mm pan head. If you are unfamiliar with working with printed circuit boards, don't try.