4×4 Matrix Keypad – Membrane Switch Keypad (16 Keys)

The 4×4 Matrix Membrane Keypad is a lightweight, flexible, and durable input device featuring 16 keys arranged in a standard 4-row × 4-column matrix layout. It is ideal for projects that require multiple user inputs, such as entering passwords, numeric data, commands, or menu navigation in embedded systems.

Constructed from a thin, water-resistant membrane material, this keypad is easy to mount on flat surfaces, project enclosures, panels, or robots. Its adhesive backing allows quick installation, while the efficient 8-pin matrix wiring enables simple interfacing with microcontrollers such as Arduino, Raspberry Pi, ESP32, PIC, AVR, and STM32. Operating voltage is compatible with both 3.3V and 5V systems.

The keypad is designed for long-term durability, providing reliable tactile feedback with each press. Its 4×4 layout includes numbers, letters, and function keys, offering greater input flexibility compared to smaller 4×3 keypads. This makes it suitable for advanced projects requiring more versatile input options.

Common applications include password-protected systems, home and industrial automation, DIY electronics and robotics, security access panels, menu-based embedded systems, calculator-style input panels, vending machines, and STEM education labs.

Choosing the 4×4 Matrix Membrane Keypad provides a reliable, compact, and easy-to-use solution for multi-key input projects. Its slim design, durability, and straightforward integration make it ideal for beginners, hobbyists, and professional developers alike.