16 Keys Matrix Keypad 4x4 Membrane Keyboard Module Array Switch for Arduino

16 Keys Matrix Keypad 4x4 Membrane Keyboard Module Array Switch for Arduino

• The Keypad library allows development board to read a matrix type keypad. 4×4 numeric keypads are widely used in project which requires the user to give command to the system or to feed in some data.
• You don't need the outer two pins on the left and right for wiring. It's the inner 8 pins that matter.
• If you solder on a header, we highly recommend laying down some flux on the pads first, inserting the header pins, then soldering
• The standard Keypad library for arduino works out of the box with this particular device.
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