NKK Switches announced the expansion of its YB2 Series of illuminated 22mm pushbuttons to include an outer ring illumination option. This new feature gives design engineers even greater ability to customize the NKK switches they include in their designs. The new outer ring illumination option is achieved by adding a cap that features a luminous bright outer ring surrounding a metallic silver center. This option is available in all the bright and super bright LED colors offered in the YB2 Series product line, including blue, green, red, white, and amber. These LED colors are diffused through a clear outer ring, framing the metallic silver center in a halo of light. Custom legends on the cap are also available.