Keypad 4×4 Matrix Membrane Module

The 4×4 Matrix Membrane Keypad Module is a simple, thin, and flexible keyboard input device ideal for embedded systems, especially those based on Arduino, ESP32, PIC, Raspberry Pi, and other microcontrollers. It features 16 tactile push buttons (4 rows x 4 columns) arranged in a matrix to reduce the number of microcontroller input/output pins required.

This membrane keypad uses a flexible PCB design with an adhesive backing, allowing it to be mounted easily onto flat surfaces like enclosures or panels. It is commonly used in projects requiring user input, password entry, menu navigation, or numeric interfaces.

With its simple interface and low profile, it is perfect for DIY electronics projects, access control systems, calculators, vending machines, and much more. The keypad connects via a standard 8-pin ribbon cable and can be easily interfaced using available libraries in the Arduino IDE.

Order now from eleberric.com, Sri Lanka’s trusted electronics component supplier, and enhance your project with intuitive input control.

Specifications

• Key Layout: 4 Rows x 4 Columns (16 Keys)

• Key Type: Tactile membrane switches

• Interface: 8-pin output (row and column)

• Contact Resistance: 500Ω – 1KΩ

• Operating Voltage: 3V – 5V

• Cable Type: Flexible ribbon with female headers

• Connector Pitch: 2.54mm (standard)

• Adhesive Backing: Yes (for surface mounting)

• Material: Plastic + conductive film

• Dimensions: Approx. 70mm x 77mm

• Weight: Approx. 7g

Key Features

• Thin and flexible design for easy mounting

• 16 keys in a 4×4 matrix layout

• Simple interface using only 8 I/O pins

• Compatible with Arduino, Raspberry Pi, ESP8266, and more

• Adhesive back for secure panel attachment

• Long-lasting membrane keys rated for millions of presses

• Easy to integrate using available Arduino libraries

• Lightweight and compact for portable projects

Applications

• Security and Access Control: Enter PIN codes in alarm and door lock systems

• User Interfaces: Control menus and input values in embedded systems

• DIY Electronics Projects: Add user input to Arduino-based gadgets

• Calculators & Data Entry Panels: Input numeric and functional commands

• Educational Projects: Learn about matrix scanning and keypad interfacing

• Industrial Equipment: Serve as input for machine settings or calibration

Upgrade your project with intuitive user input—buy the 4×4 Matrix Membrane Keypad Module today from eleberric.com, Sri Lanka’s go-to store for electronic components.