4x5 Matrix Keypad Extra Large 20-Key Keyboard Module

4x5 Matrix Keypad Extra Large 20-Key Keyboard Module

This extra-large 4x5 matrix keypad provides 20 buttons for user input in electronic control systems. It uses matrix scanning, allowing many keys to be read using fewer microcontroller pins. It is suitable for password locks, menu navigation, access control panels, industrial input panels, vending machine projects, calculator projects, and Arduino/ESP32 user interface systems. The larger size makes it easier to press and read compared to smaller keypad modules. Package includes the same components as the picture.