RR-3PD-1 is a 300W plug-in dimmer module. These dimmers alleviate the challenges of dimming LEDs and CFLs and offer more reliable dimming performance over incandescent dimmers when dimming these bulbs. The RadioRA 2 Dimming Module functions much like standard lamp dimmers, but also incorporates advanced features such as fade on/fade off, delayed long fade off, and rapid full on. It features Lutron’s patented Softswitch® technology to prevent the relay contacts from arcing, extending the average life of the switch.