Product Name:

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

Product Description:

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. This keypad is ideal for applications that require multiple user inputs such as entering passwords, commands, menus, or numeric data.

Made with a thin, water-resistant membrane material, the keypad is easy to mount on flat surfaces, project boxes, panels, or robots. It connects directly to microcontrollers like Arduino, Raspberry Pi, ESP32, PIC, AVR, and STM32, making it perfect for electronics prototyping and embedded system development.

Key Features:

• 16 Keys: Full 4×4 layout with numbers, letters, and function keys

• Ultra-thin Membrane Design: Lightweight and flexible

• Adhesive Backing: Easy to stick onto enclosures or project surfaces

• Matrix Wiring: Efficient 8-pin interface for microcontrollers

• Operating Voltage: 3.3V – 5V compatible

• Durable: Long key life with reliable pressing feedback

• Fully Compatible With: Arduino, Raspberry Pi, ESP32, STM32, PIC, AVR, ARM

Applications:

• Password-protected systems

• Home and industrial automation

• DIY electronics and robotics

• Security access panels

• Menu-based embedded systems

• Calculator-style input panels

• Vending machines & control boxes

• STEM education labs

Why Choose This Keypad?

This 4×4 Matrix Membrane Keypad offers more keys than the 4×3 version, allowing richer input options for advanced projects. Its slim form factor, durability, and easy wiring make it a perfect choice for both beginners and professionals.