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