Brand New 60mm Dome Push Buttons With -Switch This 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 various projects including machine builds, commercial, exhibitions and academic. These buttons require 4.8mm crimped wires for connection. 1 wire for ground connection (CO) and 1 wire for signal connection (NO). 1 wire for the positive connection and 1 wire for the negative connection (if the LED does not work. exchange LED lights interface.) Colour: As shown Material: Nylon Size: 6.3x5.6x2.3cm Package Contents: 5 * Buttons Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.