WESTCO
SMART HOMES
What Is Lutron's Radio Ra3?
Radio Ra3 answers a question that comes up on nearly every retrofit project: how do you get a truly high-end lighting system into a home that's already built, without opening walls?
The answer used to be "you can't — not really." Wireless smart home systems existed, but none were in the same category as hardwired luxury platforms. Ra3 changed that. It delivers the same flicker-free dimming, the same elegant keypads, the same app experience, and the same deep integration capabilities as a hardwired Lutron system — using Clear Connect RF, Lutron's proprietary wireless protocol engineered specifically for whole-home lighting control.
The result is a system that feels indistinguishable from a wired installation, without touching a single wall.
Clear Connect RF — Not Your Average Wireless
Most wireless smart home systems repurpose existing protocols like Zigbee, Z-Wave, or Wi-Fi. Ra3 uses Clear Connect RF — a dedicated frequency band developed exclusively for lighting control. It doesn't share spectrum with Wi-Fi or Bluetooth.
The result: zero interference, exceptional range, and rock-solid reliability even in homes with dense walls, steel framing, or large square footage. Ra3 systems don't drop commands. They just work.
What Radio Ra3 Can Do
- Whole-home scene control from elegant wall keypads or the Lutron app
- Smooth, flicker-free dimming on LEDs, halogens, and incandescents
- Scheduling by time of day, sunrise/sunset, or occupancy sensors
- Native Apple HomeKit support — appears directly in the Home app
- Alexa and Google Home voice control
- Integration with Savant, Control4, and Crestron
- Motorized shade control alongside lighting
- Pico wireless remotes for bedside or countertop
Ideal For
- Existing homes where rewiring isn't practical or renovation is already planned
- Individual floors, guest houses, or smart home retrofits
- Homes where previous automation systems were never finished or failed
- Apple households who want native HomeKit lighting control
Lutron Radio Ra3 FAQs
Everything you need to know about upgrading to the latest Lutron Radio Ra3 smart lighting system.
What is Lutron Radio Ra3?
Lutron Radio Ra3 is the latest wireless smart lighting control, featuring Sunnata line dimmers and a powerful new processor that enhances range, aesthetic, and reliability.
How many dimmers can Ra3 support?
A single Radio Ra3 processor supports up to 200 devices. For larger estates, a second processor can be added to control up to 400 dimmers, shades, and keypads.
Does Radio Ra3 require special wiring?
While new Sunnata dimmers often require a neutral wire for optimal performance, neutral-free options are available for retrofits into older homes through our expert installation.
What is your service area?
We serve the entire Los Angeles area from our Rolling Hills Estates office, with nationwide consultation available for custom Radio Ra3 and Vantage retrofits.