16 Keys (4x4) Matrix Keyboard Module

This high quality 4x4 Keypad Matrix lets you quickly add controls to your electronics projects. It offers 0-9 numerals, A-D letters, and standard star(*) and hash(#) symbols. 
 
Specification:
16 Button Matrix
0-9 # * A-D
Excellent price-performance ratio 
Easy communication with any microcontroller