This 4×3 Matrix Membrane Keypad features 12 tactile keys in a grid layout for precise digital input. Durable, lightweight, and easy to interface with microcontrollers like Raspberry Pi, ESP32, or STM32.

Specs:

• 12 keys (0–9, *, #)

• Flexible membrane with adhesive back

• 7-pin interface for simplified I/O

• Ideal for embedded systems, password input, or access control