About this item

⌨️ 4×4 Membrane Keypad – 16 Keys

💡 The 4×4 keypad is a simple and reliable input device designed for entering numeric data or commands in your electronic projects.
With its 16 keys (0–9, A–D, *, #), it is widely used in Arduino, Raspberry Pi, embedded systems, and custom user interfaces.

🛡️ Technical Specifications

• Type: Membrane matrix keypad
• Layout: 4 rows × 4 columns
• Keys: *16 (0–9, A–D, , #)
• Interface: Matrix output (8 pins)
• Dimensions: approx. 7.7 × 7.7 cm
• Connector: 8-pin (Dupont or soldering)
• Material: durable plastic membrane
• Lifespan: > 1 million presses per key

🌐 Compatibility

• Arduino (Keypad library)
• Raspberry Pi (GPIO interface)
• ESP32, ESP8266, STM32, etc.
• Any microcontroller supporting matrix input

🛠️ Applications

• 🔐 Code lock systems (keypad lock)
• 🎮 Simple user input for DIY gaming projects
• 🖥️ Device control and user menus
• 📟 Numeric input for IoT and embedded systems

✨ Key Features

• 📦 Compact, lightweight, and easy to integrate
• 🖲️ Simple wiring with only 8 pins
• ⌨️ Clear, responsive key layout
• 💡 Durable with long key lifespan