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EMS-00015-C

(Last updated) Jun 22, 2026

4x4 Keypad

Membrane switch keypad

The 4×4 / 4×3 Membrane Keypad is a thin, flexible input device used with Arduino, ESP32, Raspberry Pi, and other microcontrollers. It uses a row-column matrix to reduce GPIO usage while providing multiple button inputs. It is commonly used in password systems, calculators, access control, and embedded projects.
Product Type Membrane Matrix Keypad
Key Layout 4×4 / 4×3
Number of Keys 12 or 16
Operating Voltage 3V – 35V DC
Connector Type 7-pin / 8-pin Header