This is part of C&K's K Series range of innovative and reliable illuminated pushbutton and keyswitch products. The 479602000 is a 10A 250VAC Illuminated Momentary Pushbutton - Grey/White. It features 7mm bushing diameter, twist to lock, and includes both a colour matched bezel and legend plate. The switch is UL, CSA, and VDE approved, meaning it has met safety standards for use in both North America and Europe. It has an LED illumination option, allowing you to install it in dark areas, or as a lighting indicator. It also has a built-in resistor to protect LEDs from voltage surges, meaning it will last for many years.