Enter your secret code using this numeric matrix keypad. It features 12 buttons laid out in a classic telephone-style 3-row-by-4-column grid.
Built from a thin, flexible membrane material with a peel-off adhesive backing, it can be mounted onto almost any surface. Because the keys are wired in a matrix configuration, you only need 7 microcontroller pins to read input from the entire pad: 3 for the columns and 4 for the rows.
Specifications
- Cable Length: 3.3 inch
- Keypad Width: 2.7 inch
- Keypad Length : 3.0inch
- Number of keys: 16
- Matrix: 4x4
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