Review on HOBOT-298: Smart Window Cleaning Robot with Ultrasonic Water Spray, Smartphone Control, and Remote Operation by Somchai Kittisak ᠌

I note that this is the third window cleaning robot that I had a chance to use and I did not expect a super effect, so before the first use I briefly washed everything with a wet rag and launched the robot on a relatively clean window, but the result was still surprising. My main disappointment is related to the automatic fluid supply unit. It is understood that you poured the product into the container, turned on the washer and drove off. In fact, it turns out that each time before use, you need to apply the liquid also on a rag. In the instructions, this is explained by the fact that at the beginning of work the washer has a dry rag, since he has not sprayed anything yet, so for a “great result” it must be moistened. In my opinion, this is cunning, and in fact, if you do not wet the rag, then the robot will not wash anything at all, because when spraying the liquid, most of it is blown away by the wind or gets on the frame, in short it flies past. On the glass is at best a fifth of it. And I didn't manage to catch absolutely calm weather. The precious branded tool that comes with the robot is wasted. That is, the function is very controversial and you still have to apply it on a rag, like in early models, so I don’t think it makes sense to pay an extra 8-10 thousand for it, since the fact of the presence or absence of this function does not affect the final result at all. I didn't find any other significant differences. Now for the quality of cleaning. The robot moves in N and Z shaped movements and it is understood that in this way it must completely go through the window, come close to the frames and wash along them, but periodically it does not reach the frame by several cm and leaves a continuous line of uncleaned surface around the perimeter. After washing, multiple stains remain and this is very clearly visible in the sun, although I tried to adjust the amount of liquid on the rag, but the result is always about the same. It's good that the sun doesn't visit us often. Well, as already noted here, it is better to test the washer before buying it, if possible