This keypad has 16 buttons, arranged in a 4×4 grid. It’s made of a thin, flexible membrane material The keys are connected into a matrix, so you only need 8 microcontroller pins (4-columns and 4-rows) to connect the key pad.
Specifications
Cable Length: 3.3 inch
Keypad Width: 2.7 inch
Keypad Length : 3.0inch
Number of keys: 16
Matrix: 4×4
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