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This is a button pad set that is designed to mount in a project enclosure. Comes with a black button pad and bezel.
The silicon rubber buttons have small conductive pads on the back side of the button to allow for shorting traces on a PCB - like the button mechanism inside a TV remote. Each button has a small 3mm hole for smaller 3mm LEDs. We have not (yet!) found an LED that will show through these buttons.
The button pad and bezel can be separated into 3 separate button segments or used as is. Each button configuration has 4 mounting holes located in each corner for sturdy mounting in any enclosure.
This set does not include a PCB, but example designs are available below. Height - 0.3", diameter of one button - 0.48"
Project description, more information and ordering can be found at https://www.sparkfun.com/products/8997
Example Wiring Schematic: http://www.sparkfun.com/datasheets/BreakoutBoards/Mini_Button_Pad_Breakout-v02.pdf
Enclosure mounting instructions: http://www.sparkfun.com/datasheets/BreakoutBoards/sm_button_pad_installation.pdf