4x4 MCU Keypad Module with 16 Tactile Keys Key benefits Simple input for embedded projects: Provides a compact 16key numeric and function array that reduces wiring and simplifies user input for microcontroller projects. Reliable tactile feedback: PCBmounted tactile push buttons deliver clear, repeatable actuation for accurate data entry and control. Easy integration: Uses a standard 4x4 matrix interface so it can be scanned by most microcontrollers and single board computers with minimal wiring and common matrix scan libraries. What it does and why you need it Offers a readymade external keypad array for menu navigation, PIN entry, command input, and prototype controls. Removes the need to build a custom keypad from individual switches, saving time and reducing wiring errors. Large keycaps and distinct button spacing improve usability for handheld panels and control boxes. Key attributes Layout: 4x4 matrix with 16 keys for numeric and function mapping. Switch type: Tactile pushbutton switches mounted on a compact PCB for dependable mechanical feedback. Interface: Standard row and column matrix pins for direct connection to microcontrollers that support matrix scanning. Form factor: External keypad array designed for mounting in enclosures or use on breadboards and development rigs. Compatibility: Works with most MCU platforms and controllers that can read a 4x4 key matrix using simple scan code routines. Performance and usability Fast response for realtime control and input tasks. Compact and modular design keeps project layouts neat and repeatable. Durable switch action suited for frequent manual input during testing and operation. Typical applications Access control and security panels for PIN entry and command selection. DIY electronics and prototyping for menu selection, mode switching, or numeric input. Robotics and remote control panels for issuing commands and adjusting parameters. What you get A complete 4x4 keypad module with 16 tactile keys and matrixready pin connections for straightforward hookup to your MCU project.