Incorporating a clip-on cover-fastening system for design flexibility, the Revolution series of control panels incorporates a button-depth adjustment facility to accommodate flat surfaces up to 1/4 inch deep. The panels offer smooth-action buttons with LED indicators and are available in a variety of configurations, from single column -- allowing for one to eight buttons -- through double- or triple-column designs with up to 24 buttons. A wide range of panel materials are offered, including wood, stone, metal, plastic, vinyl, and glass.