The 4×5 Matrix Array 20 Key Membrane Switch Keypad is a compact and reliable keypad designed for easy integration with microcontrollers such as Arduino, Raspberry Pi, and other development platforms. Featuring a 4-row by 5-column matrix layout, this keypad provides 20 tactile keys labeled with numbers, letters, and functions suitable for menu navigation, PIN entry, or custom input systems.

Built with a flexible membrane design, the keypad is lightweight, dustproof, and moisture-resistant. The adhesive backing allows for easy mounting on most flat surfaces, making it ideal for DIY electronics, embedded systems, and interactive projects.

Features of 4×5 Matrix 20-Key Membrane Keypad:

1. 20-key (4 rows × 5 columns) matrix configuration
2. High-quality, durable membrane design with tactile response
3. Compact and ultra-thin, perfect for embedded applications
4. Easy to interface with microcontrollers using standard matrix scanning
5. Adhesive backing for convenient mounting on panels or enclosures

Specifications of 4×5 Matrix 20-Key Membrane Keypad:

• Number of Keys: 20
• Layout: 4×5 Matrix
• Interface: 8-pin (5 columns + 4 rows)
• Key Type: Membrane tactile
• Operating Voltage: 3V to 5V
• Connector: Female header (Dupont style)

Package Includes:

1 × 4×5 Matrix Array 20 Key Membrane Switch Keypad Keyboard For Arduino