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Plus Minus
Plus Minus (Positive & Negative) - rotate the body of the wall socket in order to control the electricity(isolate and supply)
Based on people's cognition, when it is turned right it is closed and when it's turned letf, it opens.
The exterior of the socket was made similar to previous products so it doesn't feel different to people. Also it is operated without the buttons, but with instinctive shapes that can be easily recognized.