Punch in your secret key into this numeric membrane keypad. This keypad has 4 buttons, and since every key has its own wire line, no matrix code is required - just treat these like every day switches. The membrane is soft and has a removable paper backing to expose a strong adhesive so you can stick this on an enclosure and feed the cable through a slot. Its a simple keypad but that's why we like it. We include a 5-pin extra-long header strip so you can plug this into a breadboard with ease. Check out Adafruit's detailed guide with wiring diagrams, libraries and example sketches for all sorts of matrix keypads. Technical Details * Weight: 2.83g * Keypad dimensions: 69.14mm / 2.72" x 20.07mm / 0.79" * Length of cable + connector: 87.31mm / 3.43" x 14.28mm / 0.56" * 5-pin 0.1" pitch connector https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2023-03-06 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2023-12-27 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2024-09-19 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2024-11-29 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2024-11-30 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2025-04-09 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2025-08-06 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2025-11-28 https://elecena.pl/product/22711062/membrane-1x4-keypad-extras 2025-11-29