DIYmalls 4x4 Keypad 16 Keys Matrix Membrane Keyboard Module Array Switch for Arduino UNO R3

Description: -The Keypad library allows your uno to read a matrix type keypad. 4×4 numeric keypads are most widely used in numerous mini project which requires the user or the operator to give command to the system or to feed in some data. - Keyboard for the pin interface.4X4 design, 10 numeric keys, 4 English keys,2 function keys. There is a switch connecting each row and column. So the combinations of rows and columns makes up the 16 inputs. - Circuit board is PCB double-panel Package Included : 1 x 16Keys 4X4 Membrane Matrix Keypad