This button is 6mm x 6mm, meaning it is 6mm wide and 6mm long. It can be used on circuit boards and printed circuits, but having only two pins makes it difficult to secure both on the circuit board and in the printed circuit. It can be said that the 4-pin version of the same button is mechanically more stable.
This button has a total of two pins, which we have labeled A and B. When the button is pressed, pins A and B short-circuit. In other words, a transmission line is formed between A and B. When we release our finger from the button, the transmission between A and B is interrupted, and it becomes an open circuit between the pins.