Choosing a Lutron system
Caséta, RadioRA 3 or HomeWorks: which Lutron system fits your house.
Three Lutron systems, compared with Lutron's own numbers, and the house each one is built for.
CA Lic. #949580 Office in Newbury Park Mon to Fri, 9 to 5
Lutron makes three home lighting control systems, and the right one depends on the size of the house, whether the walls are open, and how far the system needs to reach. This page sets them side by side using Lutron's own figures, then says where each one fits.
Side by side
The three systems in Lutron's numbers.
| Caséta | RadioRA 3 | HomeWorks | |
|---|---|---|---|
| Who sets it up | Homeowner or professional, through the Lutron app | Qualified installers only, Lutron Designer software | Qualified Lutron installer, PC programming |
| How devices connect | Clear Connect wireless, not Wi-Fi | Clear Connect wireless, not Wi-Fi | Wired QS, Clear Connect wireless, or both |
| Stated RF coverage | About 2,500 sq ft | Up to 7,500 sq ft | Up to 50,000 sq ft |
| Scale | Up to 75 devices, 1 hub and 1 repeater | Up to 400 devices with paired processors | Up to 10,000 zones, 1 processor plus up to 15 more processors or gateways |
| Keypads | Pico wireless remotes | Sunnata, seeTouch, Pico | Palladiom, Alisse, Aviena, seeTouch, Sunnata and more |
| Shades | Triathlon battery shades | Triathlon, Sivoia QS and Palladiom wireless, Palladiom wire-free | Sivoia QS and Palladiom wired or wireless, Palladiom wire-free, Triathlon |
| Ketra | Not listed | Not listed | Listed as a HomeWorks load type |
Figures from Lutron's residential systems page and its support article on choosing a residential system, read November 2026. Lutron updates its lines; the references below are current.
Where each one fits
Three houses, three answers.
Caséta
A condo, a smaller house, or a few rooms. Lutron calls it an easy entry point and says each Caséta dimmer installs in under 15 minutes. A good start, with a ceiling on how far it grows.
RadioRA 3
A finished house that is not being gutted, up to roughly 7,500 square feet of coverage. Keypads, scenes and shades without opening walls.
RadioRA 3
HomeWorks
New construction, a full remodel, an estate with outbuildings, Ketra lighting, or architectural keypads such as Palladiom and Alisse.
HomeWorksImage courtesy of Lutron. County Line Electric is a Lutron dealer.
The questions that decide it
Four questions settle most houses.
Are the walls open? On new construction or a remodel that strips rooms to the studs, wiring is cheap and HomeWorks with wired panels becomes practical. In a finished house, wireless devices in the existing boxes are the sensible starting point, which points to RadioRA 3 or Caséta, or to wireless HomeWorks devices.
How big is it, and how many buildings? Lutron's coverage figures are the hard limits: about 2,500 square feet for Caséta, up to 7,500 for RadioRA 3, up to 50,000 for HomeWorks. A main house, guest house and pool house on one plan is HomeWorks territory.
Which keypads and lights do you want? Palladiom, Alisse and Aviena keypads are HomeWorks products. Ketra is listed for HomeWorks and not for Caséta or RadioRA 3. If a designer has specified either, the system choice is already made.
Who will change it later? Caséta is set up in the Lutron app and a homeowner can add to it. RadioRA 3 and HomeWorks are programmed by a qualified installer, which is the trade for far more capability. County Line programs the systems it installs and stays available for changes.
What all three share
What Caséta, RadioRA 3 and HomeWorks have in common.
Caséta, RadioRA 3 and HomeWorks share more than the Lutron name. Lutron's support guidance says that in all three the hub or processor must be hardwired to the home network by an Ethernet cable, and that it is the only Lutron device generating traffic on that network. The other devices talk to it over Clear Connect radio or, in HomeWorks, over wired links. That is why a Lutron system does not slow down the Wi-Fi, and why the placement of the hub or processor matters as much as the devices.
All three are controlled day to day through the Lutron app, which Lutron says can be shared with up to 10 concurrent users. What changes between them is reach, device choice, who programs the system and how far it can grow. A household moving from one to another is usually moving for one of those four reasons, not because the simpler system stopped working.
Shades in the decision
The shades often decide the system.
Battery-powered Triathlon shades work with all three systems, according to Lutron, which makes them the usual choice for a finished house. Sivoia QS and Palladiom shades come in wired and wireless versions and suit new construction, where power can be run to each pocket. Palladiom wire-free shades run on no more than six D-cell batteries, which Lutron says last three to five years.
A house with many large windows, a two-story wall of glass, or skylights usually needs the wider product range that comes with RadioRA 3 or HomeWorks. The motorized shades page covers the families in detail.
Why the installer matters
What an electrical contractor checks before recommending a system.
County Line is a Lutron dealer and a licensed electrical contractor. Before it recommends a system it looks at:
- Switch boxes: depth, ganging and whether a neutral is present, since several Lutron wireless dimmers require one
- The fixtures and LED drivers on each circuit, and whether they dim cleanly
- Where the processor or hub can sit on a wired network connection
- Construction that affects radio range: plaster, stone, metal and long wings
- Which windows need shades, and whether power can reach them
- What the house may add later: a remodel, an addition, a guest house
County Line Electric at a glance
- 20+ yrsIn businessJeff Tucker has run County Line Electric in the Conejo Valley for over 20 years.
- #949580California contractor licenseLicensed, bonded and insured. Check it on the CSLB site any time.
- Site reviewSystem planningWiring, rooms and compatible controls reviewed for the project.
- A+BBB Accredited since 2017Rated A+ by the Better Business Bureau. See the profile.
- 5.0HomeAdvisor ratingFive stars from every reviewed job. Read the reviews.
Comparison questions
What is the difference between Caséta and RadioRA 3?
Caséta is Lutron's entry system: set up in the Lutron app by a homeowner or a professional, with stated coverage of about 2,500 square feet and up to 75 devices. RadioRA 3 is programmed only by qualified installers, covers up to 7,500 square feet and up to 400 devices with paired processors, and adds keypads such as Sunnata and seeTouch.
What is the difference between RadioRA 3 and HomeWorks?
RadioRA 3 is wireless. HomeWorks can be wired, wireless or both, covers up to 50,000 square feet and up to 10,000 zones per Lutron, offers the Palladiom, Alisse and Aviena keypad families, and is the Lutron residential system that lists Ketra as a load type.
Can a Caséta system be upgraded to RadioRA 3 later?
Lutron presents them as separate systems with different devices and programming. Plan on a RadioRA 3 project being its own installation; County Line reviews what is already in the house and what can be reused before proposing anything.
Which Lutron system works with Ketra?
Lutron lists Ketra under HomeWorks among its residential systems. Ketra is not listed for Caséta or RadioRA 3.
Which Lutron system does County Line recommend?
The one the house calls for. County Line surveys the wiring, the size of the property and what the household wants to control, then recommends Caséta, RadioRA 3 or HomeWorks in a written proposal.
The Lutron library
Every Lutron system page.
Official references
Where the facts on this page come from.
County Line links to the authorities rather than restating them. Rules change; these pages are current.
- Lutron residential systems: Caséta, RadioRA 3 and HomeWorks
- Lutron: which residential system is best: coverage, device counts, programming
- Lutron Caséta: Clear Connect, smart hub, Pico
- Lutron RadioRA 3: existing homes
- Lutron HomeWorks: whole-home control
- CSLB license check: license #949580
Next step
Not sure which one your house needs?
Tell us the size of the house, whether the walls are open, and what you want to control. The office sets up a survey.
Or call (805) 499-0823. Monday to Friday, 9 to 5.