4x4 Matrix 16Key Membrane Keypad Keyboard (2Pack) A compact, lowprofile input solution for prototype and product development. Each flexible membrane keypad provides a 4x4 matrix of 16 keys for simple numeric and navigation input. Supplied as a twopack for spare parts or multiple projects. Key benefits Simple integration: Matrix layout reduces wiring and works with standard scanning routines used on common microcontrollers. Space efficient: Lowprofile membrane design fits into compact enclosures and panel cutouts without adding bulk. Consistent input: Each key delivers a predictable switch action suitable for menu control, data entry, and user interfaces. Ready for multiple projects: Two identical keypads let you prototype one design while keeping a spare, or use both in multipanel systems. Main features 4x4 matrix arrangement delivering 16 keys in a single unit. Membrane switch construction for slim form factor and easy surface mounting. Durable flexible layer suitable for regular use in hobby and development environments. Compatible with widely used microcontrollers such as Arduino, AVR, PIC and any controller that supports matrix keypad scanning. Practical applications Prototype control panels for microcontroller projects including menu navigation and numeric input. Educational and hobby electronics where quick keypad input is needed for experiments and labs. Embedded interfaces for small devices such as custom calculators, access panels, or simple data entry stations. Technical notes Functions as a matrix keypad; implement standard row and column scanning to read key presses. Supplied as a twopack for convenient replacement or parallel use. What you get Two 4x4 membrane switch keypad modules, each providing 16 keys in a compact format. This keypad is a straightforward, reliable input option when you need a compact, matrixbased keyboard for microcontroller projects and small embedded interfaces.