A basic 12-button keypad in a standard telephone layout (1–9, 0, *, #), designed for easy user input with microcontrollers. The buttons are wired in a matrix format, allowing a microcontroller to scan 7 output pins to detect which button is pressed.

Key Features

• 12-Button Matrix – Standard telephone layout (1–9, 0, *, #)
• 7-Pin Interface – 3 columns × 4 rows matrix scanning
• Low Contact Resistance – 10–150 ohms per keypress
• Simple Integration – Works with Arduino, Raspberry Pi, and other microcontrollers

Ideal For

• User input and PIN entry systems
• Arduino and microcontroller projects
• Access control and security systems
• Menu navigation interfaces