{"product_id":"12-key-membrane-keypad-4x3-matrix","title":"12 Key Membrane Keypad 4x3 Matrix","description":"\u003cp\u003eA slim 12-key membrane switch keypad in a 4x3 matrix layout. A simple, low-cost way to add number entry or button input to ESP32, Arduino and other microcontroller projects, such as PIN entry, menus, or control panels.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eKeys: 12 (4 rows x 3 columns)\u003c\/li\u003e\n\u003cli\u003eType: membrane switch matrix keypad\u003c\/li\u003e\n\u003cli\u003eWorks with: Arduino, ESP32, STM and other microcontrollers (scan the matrix with GPIO pins)\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -40C to +80C\u003c\/li\u003e\n\u003cli\u003eRated for low-voltage signal use (DC 35V max)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEach keypad is sold on its own. Libraries such as Keypad for Arduino make wiring and reading the matrix straightforward.\u003c\/p\u003e","brand":"Tinker Tailor","offers":[{"title":"Default Title","offer_id":67614774591721,"sku":"KEYPAD-4X3-MEMBRANE","price":4.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/8006\/3209\/files\/Screenshot_2026-10-05_124022.png?v=1791225820","url":"https:\/\/www.tinkertailor.ca\/fr\/products\/12-key-membrane-keypad-4x3-matrix","provider":"Tinker Tailor","version":"1.0","type":"link"}