I have tested the iRobot Roomba 880, this is basically the same as the 871 but, differing only in the delivery. What convinced me of the device, especially that he no longer relies on brushes. Because of my cats had to other devices very quickly added the brushes with hair and had to be cleaned laboriously. That hardly happens with the new device, the so-called rubber extra gates will ensure that sucked the hair and not wrapped around the brush. Nevertheless, the cleaning performance is very good with the device, as I will show in a test in the blog akku-und-roboter-staubsauger.de. When navigating has little visible done, which is similar in case the older iRobot series, only a targeted way journey out occurs several times, once a dirt sensor detects dirt. The contamination detection was at the 880 and probably 871 improves because is no longer recognized dirt only acoustically but also visually. So even dirt by light particles or hair can be detected. Only the remote control operation I found something hackelig, probably due to the delay and also have to be careful that they are reasonably accurate on the unit aligns (IR). However, I use the remote control anyway hardly, therefore bothers me the less. I would have wished me a little more systematic navigation, but you also have to admit that the robot also cleans as the room quite thoroughly, but it takes a little longer as the blog-test video was already said.
