4x3 Membrane Keyboard – Compact Matrix Panel for User Interfaces

The Membrane Switch Keypad 4 × 3 is a compact input keypad featuring 12 keys in a 4 × 3 matrix layout, designed to provide tactile input for electronic projects, microcontrollers, embedded systems, automation panels and DIY applications. The flexible membrane design uses conductive contacts beneath each key that close the circuit when pressed, enabling reliable and low-profile user interaction.

This keypad connects easily to controllers like Arduino, AVR, PIC or other microprocessors, scanning the matrix via a minimal number of pins to determine which key is pressed. Its slim form factor and robust membrane make it ideal for compact enclosures and frequent use.