The Keypad Membrane 3x4 & 4x4 is a lightweight and flexible input device used for data entry in embedded systems. These matrix keypads use a simple row-and-column arrangement, reducing the number of microcontroller pins needed. Ideal for Arduino, Raspberry Pi, and other microcontrollers, they are perfect for password entry systems, calculators, and menu navigation. Both 3x4 (12 keys) and 4x4 (16 keys) versions are available to suit different project requirements.

Features:

• Available in 3x4 (12 keys) and 4x4 (16 keys) layouts

• Soft-touch membrane keys for smooth operation

• Adhesive backing for easy mounting

• Simple row-column wiring to save microcontroller pins

• Compatible with Arduino, ESP32, Raspberry Pi, STM32

• Long-lasting and reliable design

Applications:

• Password-protected door locks

• Calculator projects

• Menu navigation in embedded systems

• Security systems

• Home and industrial automation