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The surveillance camera in the general private house sticks to the wall of the building and watches only one direction. However, then I cannot watch all. It is the robot which it runs about, and can watch the outer wall of the private house from many aspects to have designed me this time. Firstly the characteristic of this robot is the thin main body. There are many obstacles to move a wall at will. Four feet with the sucker which is four feet operate it to the second as having had separate intention. I may spend the daily life by this robot more comfortably more safely.