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4x4 Matrix Membrane Keypad

4x4 Matrix Membrane Keypad

    • S$1.43
  • Ex Tax: S$1.43
    • 10 or more S$1.37
    • 30 or more S$1.14
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  • Product Code: SW-KEYPAD-MEM-4X4
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Punch in your secret key into this numeric matrix keypad. This keypad has 16 buttons, arranged in a telephone-line 3x4 grid + 4 extra keys - A, B, C and D. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 8 microcontroller pins (4-columns and 4-rows) to scan through the pad.

Check the resources at bottom of this description to get the tutorial and sample code for Arduino.

Note: You might need extra long header pin or jumper wires so you can plug this into a breadboard or Arduino with ease. Check this video by Gadget Reboot:


  • 4x4 bendable membrane keypad
  • Arranged in telephone-line 3x4 + 4 extra keys, 16 keys in total
  • Weight: 10 grams
  • Keypad dimensions: 77mm x 77mm x 1mm (3" x 3" x 0.035")
  • Length of cable + connector: 85mm
  • 8-pin 0.1" pitch connector

Packing List:

  • 1 x 4x4 Matrix Membrane Keypad

Documents and tutorials:

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Tags: 4x4, Membrane, Arduino Keypad