4x4 Matrix Keypad

This 16-button keypad provides a useful human interface component for microcontroller projects. Convenient adhesive backing provides a simple way to mount the keypad in a variety of applications. The Keypad 4x4 features a total of 16 buttons in Matrix form. This is a membrane keypad with no moving parts. A female 8-pin berg connector is provided for interfacing it with your microcontroller circuits. Convenient adhesive backing provides a simple way to mount the keypad in a variety of applications.

Key Features:

Ultra-thin design & adhesive backing provides easy integration to any project
Excellent price-performance ratio
Easy communication with any microcontroller

Application Ideas:

Security systems
Menu selection
Data entry for embedded system

Spefications:

Cable Length: 80mm (include pins)
Weight: 10g
Connector: 8 pins, 0.1" (2.54mm) Pitch
Mount Style: Self-Adherence
Max. Circuit Rating: 24VDC
Dielectric Withstand: 250VRms (60Hz, 1min)
Contact Bounce: <=5ms

Tutorial:http://www.instructables.com/id/Connecting-a-4-x-4-Membrane-Keypad-to-an-Arduino/