This 4×5 Matrix Array 20 Key Membrane Switch Keypad Keyboard is a high-quality soft-touch feeling button keypad with 100 million life-stroke lifespans and good resistance to environmental conditions.This DC 12V 4×5 Key Matrix Membrane Switch Keypad is a high-quality product at a very low cost for your application needs.This 20-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 4×5 features a total of 20 buttons in Matrix form. This is a membrane keypad with no moving parts. A female 9-pin berg connector is required for interfacing it with your microcontroller circuits.

Features :

• Ultra-thin design & adhesive backing provides easy integration to any project
• Excellent price-performance ratio
• Easy communication with any microcontroller
• 5 pins 2.54mm pitch connector, 4×5 type 20 keys.
• The sticker can peel off for adhesive mounting.
• Used widely in industrial and home electronic equipment, instrument, etc.
• This allows a microcontroller to ‘scan’ the 9 output pins to see which of the 20 buttons is being pressed.