The RF relay module with Softswitch is a radio frequency (RF) device that uses Lutron patented Softswitch technology to control up to 16 A of general-purpose loads based on input from RA2 Select, RadioRA 2, and HomeWorks systems. Lutron patented Softswitch technology prevents arcing of relay contacts, extending product lifetime. Mounts to an electrical junction box through a 1/2 in (21 mm trade-size) knockout opening.