Membrane Matrix Keypad with connector

A membrane matrix of 12 keypad

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4,52 € incl. tax

27 items in stock

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Punch in your secret key into this numeric matrix keypad.

This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. 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 7 microcontroller pins (3-columns and 4-rows) to scan through the pad.


We include a 7-pin extra-long header strip so you can plug this into a breadboard with ease.


An easy way to do your own alarm system here (french).



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