EmbeTronicX 4x4 Matrix 16-Keypad Keyboard Module – 16 Button for Arduino & DIY Electronic Components Electronic Hobby Kit

The 4×4 Matrix 16 Keypad Keyboard is a widely used input device in various projects, providing a user-friendly interface with a total of 16 keys that allow for the same input values. This module is a non-encoded matrix keypad, meaning it consists of 16 keys arranged in parallel, which can easily be accessed and pressed. The keys are organized so that each row and column connects through external pins; pins R1-R4 control the rows, while L1-L4 control the columns, ensuring straightforward wiring.