12Key Numeric Keypad with Star and Hash Key benefits Ready to use keypad that provides numeric input 0 through 9 plus star and hash keys for common input needs. Welded pin header eliminates the need for manual soldering, saving assembly time and reducing installation errors. Matrix row and column switching reduces wiring complexity and enables reliable scanning of all 12 keys. Designed for easy integration with microcontrollers, simplifying user input for prototypes and finished projects. Features and important attributes Keys: 12 keys arranged as digits 0 to 9 plus star and hash. Connection: Welded pin header for plugandplay installation, no additional soldering required. Matrix design: Each row and column is switched so the intersection combinations produce 12 discrete inputs for efficient keypad scanning. Compatibility: Works with common microcontrollers and development boards; easy to interface with platforms such as Arduino or Raspberry Pi. Ease of use: Simple wiring and standard matrix operation allow quick setup and reliable key detection. How this product solves common problems Eliminates timeconsuming solder work by providing a prewelded pin header for immediate connection. Reduces wiring and I O pin usage on your controller by using a row and column matrix instead of individual connections for each key. Provides a straightforward numeric input method for projects that need user entry without custom keypad design. Typical applications Microcontroller projects: Add numeric input to prototypes and hobby projects that require password entry, menu selection, or numeric control. Control panels: Implement a compact keypad interface for embedded systems, access controls, or small equipment panels. Educational and testing setups: Quickly attach a keypad to development boards for classroom labs, demonstrations, and rapid prototyping. Quick setup notes Connect the matrix pins to your microcontroller I O pins and implement a standard keypad scanning routine to read key presses. No soldering required for the header pins; mount and wire directly for faster assembly. This keypad offers a simple, reliable way to add numeric and symbol input to electronic projects with minimal setup and easy compatibility with common microcontroller platforms.