Brand New 60mm Dome Buttons With -SwitchThis illuminated button comes complete with fixing ring, 12v LED, bulb holder and microswitch. The LED requires a 12v power supply.This can be taken from a spare molex connector on a PC power supply or a Jamma harness. perfect for projects including machine builds, commercial, exhibitions and academic.These buttons require 4.8mm crimped for connection. 1 wire for ground connection (CO) and 1 wire for signal connection (NO).1 wire for the connection and 1 wire for the negative connection (if the LED does not work. Please exchange LED interface.)Colour: As shownMaterial: NylonSize: 6.3x5.6x2.3cm Contents:5 * ButtonsOnly the above content, other are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.