Micro switch 4×4 matrix keypad

The 4×4 Matrix Keypad is an input device that allows for user interaction through a grid of 16 keys arranged in a matrix configuration. Each key in the keypad uses a micro switch mechanism to provide tactile feedback and reliable performance. The matrix arrangement allows for efficient scanning and detection of key presses, making it suitable for various applications in electronics, including user interfaces for control panels and embedded systems.

Key Features:

• 16 keys arranged in a 4×4 matrix configuration
• Micro switch mechanism for tactile feedback
• Compact and durable design
• Low power consumption
• Easy to integrate with microcontrollers and other digital systems
• Each key provides a distinct and reliable electrical signal

Technical Specifications:

• Matrix Configuration: 4 rows x 4 columns
• Key Switch Type: Micro switch (mechanical)
• Contact Rating: 50mA at 12V DC
• Operating Temperature Range: -20°C to +70°C
• Lifetime: 1,000,000 key presses (typical)
• Key Travel: 2.0mm (typical)
• Keypad Dimensions: 80mm x 80mm x 20mm (approximate)
• Mounting Type: Through-hole or surface mount

Applications:

• User Interfaces: Used in control panels and electronic devices where user input is required.
• Embedded Systems: Provides a method for input in embedded systems and microcontroller projects.
• Keypad Controls: Suitable for use in access control systems, home appliances, and electronic instruments.
• Industrial Equipment: Used in industrial control systems for user input and command.

Usage:

1. Integrate the keypad with your microcontroller or digital system using the matrix wiring (rows and columns).
2. Configure the software to scan the matrix and detect key presses.
3. Connect the keypad to the appropriate input pins on your controller or processor.
4. Implement debouncing in the software to handle key press events reliably.

Caution:

• Avoid excessive force on the keys to prevent damage to the micro switches.
• Ensure proper handling to avoid electrostatic discharge (ESD) damage.
• Verify that the keypad’s operating temperature range matches the conditions of your application.

Datasheet:
For detailed technical specifications, refer to the 4×4 Matrix Keypad Datasheet.