---
product_id: 564946239
title: "3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU"
brand: "seiwei"
price: "€ 34.82"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/564946239-3-x-4-matrix-array-keypad-black-external-membrane-keyboard
store_origin: PT
region: Portugal
---

# 20g lightweight 12 keys Easy soldering 3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU

**Brand:** seiwei
**Price:** € 34.82
**Availability:** ✅ In Stock

## Summary

> Unlock Your Creativity with Every Key! 🔑

## Quick Answers

- **What is this?** 3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU by seiwei
- **How much does it cost?** € 34.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/564946239-3-x-4-matrix-array-keypad-black-external-membrane-keyboard)

## Best For

- seiwei enthusiasts

## Why This Product

- Trusted seiwei brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Build:** High-quality membrane ensures longevity and reliability.
- • **Compact Design:** Lightweight at just 20g, ideal for portable applications.
- • **Easy Integration:** Solder-friendly design for quick setup and customization.
- • **Tactile Feedback:** Enjoy responsive key presses for a seamless experience.
- • **Versatile Command Input:** Perfect for mini projects requiring user interaction.

## Overview

The SEIWEI 3 x 4 Matrix Array Keypad is a high-quality, lightweight external membrane keyboard module featuring 12 tactile keys, designed for seamless integration into various electronic projects. With its compact size and user-friendly soldering process, this keypad is perfect for hobbyists and professionals alike looking to enhance their command input capabilities.

## Description

Features: 1.The Keypad library allows to read a matrix type keypad. 4×4 numeric keypads are most widely used in numerous mini project which requires the user or the operator to give command to the system or to feed in some data.2. Bear in mind that you don't need the outer two pins on the left and right for wiring. It's the inner 8 pins that matter.3.If you solder on a header, we highly recommend laying down some flux on the pads first, inserting the header pins, then soldering4. The standard Keypad library for Arduino works out of the box with this particular device.Description :Keyboard for the pin interface.4X4 design, 10 numeric keys, 4 English keys,2 function keys. There is a switch connecting each row and column. So the combinations of rows and columns makes up the 16 inputs.Circuit board is PCB double-panel Package includes : 1 x Membrane Matrix Keypad

## Features

- High quality 12 button tactile keypad, include 10 numeric keys and 2 function keys.
- This keypads are most widely used in numerous mini project which requires the user or the operator to give command to the system or to feed in some data.
- If you solder on a header, we highly recommend laying down some flux on the pads first, inserting the header pins, then soldering
- Bear in mind that you don't need the outer two pins on the left and right for wiring. It's the inner 8 pins that matter.
- Suitable for various electric project that requires a keyboard connection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SEIWEI |
| Package Dimensions | 17 x 14 x 2.5 cm; 20 g |
| Manufacturer reference | WGP-HA4706-TS |
| Manufacturer | SEIWEI |
| Colour | Black |
| Are Batteries Included | No |
| Item Weight | 20 g |
| Guaranteed software updates until | unknown |

## Images

![3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU - Image 1](https://m.media-amazon.com/images/I/714KLVfqt-L.jpg)
![3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU - Image 2](https://m.media-amazon.com/images/I/51bSNk9v9uS.jpg)
![3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU - Image 3](https://m.media-amazon.com/images/I/61e5e1K8KsL.jpg)
![3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU - Image 4](https://m.media-amazon.com/images/I/91kRrYQqSBS.jpg)
![3 x 4 Matrix Array Keypad, Black External Membrane Keyboard Module Switch with 12 Keys for MCU - Image 5](https://m.media-amazon.com/images/I/61JD5W8UnCS.jpg)

## Available Options

This product comes in different **Size Name** options.

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**Shop now:** [https://www.desertcart.pt/products/564946239-3-x-4-matrix-array-keypad-black-external-membrane-keyboard](https://www.desertcart.pt/products/564946239-3-x-4-matrix-array-keypad-black-external-membrane-keyboard)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-04-01*