4×4 Matrix Keypad Membrane Switch — 16-Button Waterproof Keyboard for Arduino & DIY Electronics

Control, Code, and Create with Precision Input.
The 4×4 Matrix Keypad Membrane Switch is a reliable and easy-to-use input device featuring 16 tactile push buttons (4 rows × 4 columns) — perfect for adding keypad control to your Arduino, ESP32, or Raspberry Pi projects. With its thin, flexible, and waterproof design, it’s ideal for applications that require both durability and compactness.

Use it for password entry systems, calculators, menu navigation, or robot control panels — this keypad brings intuitive interaction to your electronics.

⚙️ Key Features

• 16 Push Buttons (4×4 Layout): Great for numeric and functional input

• Durable Waterproof Membrane: Resistant to dust, moisture, and wear

• Adhesive Backing: Easy to mount on enclosures or project boxes

• Standard Matrix Interface: 8-pin connector simplifies wiring with microcontrollers

• Lightweight & Flexible: Perfect for compact or flat-panel designs

💡 Perfect For

• Security keypads and access systems 🔐

• Arduino menu navigation and control panels ⚙️

• Calculator or numeric input devices 🧮

• Robotics or home automation controllers 🤖

🛒 Why Makers Love It

✅ Simple 8-pin matrix connection
✅ Works out-of-the-box with Arduino keypad libraries
✅ Durable, sleek, and space-saving design

Make your project interactive — add the 4×4 Matrix Membrane Keypad to your toolkit today!