4×4 16Key Matrix Keyboard Membrane Switch Keypad

The 4×4 16-Key Matrix Membrane Keypad is a compact, lightweight, and ultra-durable user input device designed for a wide range of electronic applications. Featuring 16 tactile keys arranged in a 4×4 matrix, this keypad provides a simple and efficient way to capture numeric and character inputs in your projects.

Built with high-quality, flexible membrane material, the keypad is thin, waterproof-like, and long-lasting, making it ideal for embedded systems, DIY electronics, home automation interfaces, access control systems, and educational projects. It connects easily with popular microcontrollers like Arduino, Raspberry Pi, ESP32, and PIC/AVR, thanks to its 8-pin matrix output.

Key Features

• 16-Button Matrix Layout: Includes numbers 0–9 and function keys A, B, C, D, *, and #.
• Ultra-Thin Membrane Design: Lightweight and flexible with an adhesive back for easy mounting.
• Durable & Reliable: Long-lasting tactile buttons suitable for frequent use.
• Easy Interfacing: 4×4 matrix configuration reduces wiring and is compatible with most microcontrollers.
• Stable & Responsive: Offers quick and accurate keypress detection.
• Compact & Space-Saving: Perfect for embedded and portable devices.

Technical Specifications

• Key Layout: 4 rows × 4 columns (4×4 matrix)
• Number of Keys: 16
• Operating Voltage: Typically 3.3V–5V (depending on microcontroller)
• Connection: 8-pin ribbon cable
• Dimensions (approx.):

  • Keypad Size: ~70mm × 77mm

  • Cable Length: ~85mm

• Material: Flexible membrane with printed overlay
• Mounting: Adhesive backing for easy installation

Applications

• Arduino and microcontroller interfaces

• Security and access control panels

• Password or PIN entry systems

• Home automation control units

• Menu navigation for embedded systems

• DIY electronics and robotics projects

• Educational microcontroller experiments

Why Choose This 4×4 Membrane Keypad?

This keypad offers the perfect blend of simplicity, durability, and versatility, making it a go-to choice for students, hobbyists, and professionals. Its compact design and smooth interfacing capabilities ensure seamless integration into any electronics project requiring a reliable user-input method.