The product is not what I expected, pinouts are different (switching on opposite corners when pressed). Seller did not provide detailed description of the switching diagram, so I had to guess (well, I guessed wrong). I will use it somewhere, but now I will have to find another type of those buttons... So, if you have already designed and made a PCB, these buttons may be different from what you used in your design. I will attach pictures when I will find exact pinouts.
Received. All as described.