4x3 Matrix Membrane Keypad – 12-Key Flexible Keypad for Arduino, Raspberry Pi, DIY Projects

The 4x3 matrix membrane keypad is a flexible, ultra-thin input device designed for integration into electronics projects. With 12 tactile keys (numbers 0–9, * and #), it provides a reliable human-machine interface (HMI) for microcontroller-based applications such as access control systems, digital locks, calculators, and menu navigation. The keypad is constructed with a flexible membrane and a 7-pin header, allowing for easy integration with development boards like Arduino or Raspberry Pi.

Key Features:

• 12-key (0-9, *, #) flexible keypad in 4x3 matrix layout
• Compatible with Arduino, Raspberry Pi, and other microcontrollers
• Ultra-thin membrane design for easy integration
• Tactile feedback with reliable switch performance
• Adhesive backing for secure mounting on panels
• 7-pin header interface (row and column scanning)