16key 4x4 matrix keypad module for MCU and DIY electronics projects. A compact input solution offering precise, stable, and reliable performance for prototyping and final designs. Key benefits Easy integration: 4x4 matrix layout provides 16 distinct keys while minimizing required GPIO lines on your microcontroller. Reliable operation: Designed for stable performance and consistent key detection in hobby and professional applications. Precise input: Clear tactile response and accurate scanning make it suitable for menu navigation, PIN entry, and command input. Space efficient: Compact module form factor fits into constrained enclosures and singleboard projects. Versatile compatibility: Works with common microcontrollers and development boards for straightforward wiring and software scanning. Features and attributes Function: 4 by 4 matrix scanning for 16 keys, suitable for direct connection to MCU digital inputs or through a driver. Compatibility: Intended for use with MCU projects and general microcontroller applications. Performance: Emphasis on precision and stable electrical characteristics for dependable reads. Construction: Electronic component module designed for repeated use and consistent key performance. Installation: Module format allows for simple wiring and mounting in DIY and embedded setups. Typical applications Access control and security panels where a compact numeric keypad is needed for code entry. User interfaces on embedded devices such as control panels, menu selection, or device configuration. Robotics and automation projects for manual control input and command selection. Why this module solves common problems Reduces the number of required input pins while delivering 16 keys in a small footprint. Speeds up development by providing a ready made keypad module that works with standard MCU scanning routines. Improves user interaction with precise and reliable key detection for consistent behavior across projects. Compatible with typical MCU workflows and suitable for hobbyists, makers, and engineers seeking a dependable 4x4 keypad module for designs and repairs.