The Lutron RadioRA 2 Maestro RD-RD-WH is a companion smart dimmer. The RD-RD-WH dimmers incorporate advanced features such as fade-on/fade-off, delayed long fade-to-off, and rapid full-on. RadioRA 2 Maestro local controls include a Front Accessible Service Switch (FASS) for safe lamp replacement. RadioRA 2 Maestro local controls install in single pole or multi-location applications. Remote dimmers / switches are available for multi-location control.