[ illuminated Selector Switches ] 1. To combinate and separate is simple, because operation part and contact part are consist of separate type. 2. In case of separate the contact part, don't need any tools, and nothing to worry about damage. 3. For both Ø22 and Ø25. 4. As diversify the color and function, user's option become wider. 5. The upper part of the front side in panel is formed by IP64, don't affected by drop of oil, bubble, and the likes on all sides.