4×5 Matrix Membrane Keypad 20-Key
Original price was: ₵25.00.₵20.00Current price is: ₵20.00.
20-key membrane matrix keypad for Arduino, ESP32 and embedded electronics projects. The flexible 4×5 keypad provides an easy user-input interface for passwords, menus, access-control systems and DIY electronic devices.
Layout: 4 × 5 Matrix
Number of Keys: 20
Interface: GPIO Matrix
Connections: 9
Switch Type: Momentary membrane
Mounting: Self-adhesive backing
Best For: Password entry, access control, menus and microcontroller projects
5 in stock
The 4×5 Matrix Membrane Keypad is a compact 20-key input device designed for Arduino, ESP32, STM32 and other microcontroller projects. Its keys are arranged in a matrix configuration, allowing multiple buttons to be read using only a small number of GPIO pins.
The flexible membrane construction makes the keypad lightweight, thin and easy to install on project enclosures. An adhesive backing allows it to be fixed directly onto a clean, flat surface.
It is ideal for projects requiring numerical entry, passwords, menu navigation, user controls or other forms of manual input.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Membrane Matrix Keypad |
| Key Layout | 4 × 5 Matrix |
| Number of Keys | 20 |
| Interface | Matrix GPIO |
| Connection | Flexible Ribbon Cable |
| Number of Connections | 9 |
| Switch Type | Momentary Membrane |
| Mounting | Self-Adhesive Backing |
| Design | Thin and Flexible |
| Compatible Platforms | Arduino, ESP32, STM32, Raspberry Pi and other controllers |
Applications
- Password and PIN entry systems
- Electronic door locks
- Access control projects
- Menu navigation
- Calculator projects
- Arduino and ESP32 interfaces
- Control panels
- Robotics
- Embedded systems
- STEM projects
Package Includes
1 × 4×5 Matrix Membrane Keypad
Related products
3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
A simple and reliable input device for Arduino and DIY electronics projects. This flexible 12-key keypad provides only the essential keys (0–9, *, #)—no letters—making it ideal for numeric-only applications. It comes with a peel-and-stick adhesive backing for quick mounting on enclosures, panels, or doors.
-
Keys: 12 (Telephone-style layout)
-
Interface: 7 pins (2.54 mm standard pitch)
-
Mounting: Self-adhesive sticker backing
- Best for: Electronic door locks, vending machines, access control systems, phone dialers, and keypad-based Arduino projects.
4×4 Matrix Membrane Keypad | 16 Button Keypad Module
The standard keypad for security projects. This ultra-thin 16-button keypad allows users to enter passwords, navigate menus, or control robots. It features a peel-and-stick adhesive backing, making it easy to mount on any plastic project box or door.
-
Keys: 16 (0-9, A-D, *, #)
-
Mounting: Self-Adhesive Backing (Peel & Stick)
-
Interface: 8 Pins (Standard 2.54mm header)
-
Best For: Electronic Door Locks, Calculators, and Attendance Systems.
SS12D00G4 Mini 3-Pin SPDT Slide Switch – 2 Position
Compact 3-pin SPDT slide switch for breadboards, PCBs and low-power electronic projects. The SS12D00G4 features two switching positions and standard 2.54mm pin spacing for easy integration into DIY circuits.
Type: SPDT / 1P2T
Positions: 2
Pins: 3
Pin Pitch: 2.54mm
Mounting: Through-hole
Typical Rating: Up to 0.2A at 30V DC
Best For: Arduino projects, PCB circuits, mode selection and low-power switching
Tactile Push Button Switch | Momentary Switch
The essential button for every project. This standard 4-pin tactile switch fits perfectly into breadboards and perfboards. It provides a satisfying "Click" when pressed and releases instantly when you let go.
-
Type: Momentary (ON only while pressed).
-
Size: 6x6x5mm (Standard).
-
Mounting: Through-Hole (Breadboard Friendly).
- Quantity: 10 Pieces per Pack.
Reviews
There are no reviews yet.