3x4 membrane keyboard, 12 Arduino buttons Membrane keyboard 12 keys (3x4 layout). Technical data: Self-adhesive - double-sided tape applied for easy installation Numbers 0÷9 and characters *, # Convenient elastic band for connection 7-pin connector, pitch 2.54 mm Maximum voltage: 35V Dimensions of the keyboard itself: 70 x 77 mm Ribbon cable length with connector: 86 mm https://elecena.pl/product/22604878/3x4-self-adhesive-membrane-keyboard-arduino 2023-02-22 https://elecena.pl/product/22604878/3x4-self-adhesive-membrane-keyboard-arduino 2024-03-15 https://elecena.pl/product/22604878/3x4-self-adhesive-membrane-keyboard-arduino 2025-10-25 https://elecena.pl/product/22604878/3x4-self-adhesive-membrane-keyboard-arduino 2025-10-29