DIYmalls 4x4 Matrix Membrane Keypad 16 Key Keyboard Module Array Switch for Arduino ESP32

4x4 keypad is widely used in Password security system Wired remote controlled robot Electronic voting machine Generating external interrupt Musical keypad etc You can use the regular 254mm jumper wire male to solder it with the 16 keys matrix keypad like shown on image You dont need the outer two pins on the left and right for wiring Its 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 If you have any problem please click DIYmallsyou can find Sold by DIYmalls under Buy Now button in the new page click Ask a question.