Description:
The 3×4 12-Key Membrane Matrix Keypad is a compact and reliable input device designed for seamless integration with microcontroller projects. It features 12 tactile keys arranged in a standard telephone-style 3×4 grid, facilitating intuitive user interaction for applications such as security systems, menu navigation, and data entry interfaces. Constructed from a thin, flexible membrane material with an adhesive backing, it can be easily mounted on various surfaces, enhancing design versatility.
The keypad operates on a matrix configuration, requiring only seven microcontroller pins (four rows and three columns) to detect key presses, conserving valuable I/O resources. Its 7-pin, 2.54 mm-pitch female header connector ensures straightforward integration with development platforms like Arduino, AVR, and Raspberry Pi. With a robust design capable of enduring over 1 million keystrokes per key, the 3×4 Membrane Matrix Keypad offers a durable and efficient solution for diverse electronic projects.
Specifications:
- Keypad Layout: 3×4 matrix (12 keys)
- Dimensions: 70mm x 77mm x 1mm
- Cable Length: 85mm
- Connector Type: 7-pin, 2.54mm pitch female header
- Operating Voltage: Up to 35V DC
- Current Rating: 100mA
- Contact Resistance: 10Ω to 500Ω
- Key Operating Force: 150 to 200N
- Rebound Time: 1 ms
- Life Expectancy: >1,000,000 keystrokes per key
- Mounting: Self-adhesive backing
- Operating Temperature: -20°C to 70°C
- Storage Temperature: -40°C to 85°C
Features:
- 12-button keypad arranged in a 3×4 matrix for efficient input
- Flexible membrane construction with adhesive backing for easy installation
- Requires only 7 microcontroller pins, optimizing I/O usage
- Compatible with Arduino, AVR, Raspberry Pi, and other microcontroller platforms
- Durable design with a lifespan exceeding 1 million keystrokes per key
Contents:
- 1 x 3×4 12-key Membrane Matrix Keypad
