November 11, 2026 · 7 min read · Lutron
Which Lutron system do I have: Caseta, RadioRA 2, RadioRA 3 or HomeWorks?
Four things to check, in the order they are easiest to find: the box that runs the system, where the dimming happens, the keypads, and the model label.
The short answer. Find the box first. A small hub by the router that Lutron calls the Smart Hub means Caseta. A processor or main repeater, usually in an equipment room beside a panel of dimming modules, means RadioRA 2, RadioRA 3 or HomeWorks. Then read the model number on the label of a dimmer or keypad, which Lutron prints on the side of the device. IntegrateIT, a Lutron Certified Dealer in Overland Park, reads these for homeowners across the Kansas City metro, and what follows is how to do the first pass yourself.
The Lutron name sits on four lighting systems that look alike on a wall plate and behave differently behind it. Caseta, RadioRA 2, RadioRA 3 and HomeWorks are separate product lines, and the one in your house decides what you can add, who can service it and how it is programmed. People usually ask this question when something has gone wrong or when a room is being added, and the previous installer is not around to say. The model numbers and hardware details below come from Lutron’s own support pages, linked at the end.
1. Find the box that runs the system
Every one of these systems has a controller, and it is the fastest clue because the four look different and live in different places.
- Caseta: the Smart Hub. Lutron’s support page calls it the Caseta Smart Hub, formerly the Smart Bridge. It is small, plugs into the router’s LAN port with an Ethernet cable, and takes power from a power adapter. It has a light bar, and a button on the back that the app asks you to press during setup. A MAC address sticker and a HomeKit code are printed on the bottom. Lutron lists two hub models, L-BDG2 and L-BDGPRO2.
- RadioRA 3: the processor. Lutron lists the RadioRA 3 processor under the model numbers RR-PROC3-CW and RR-PROC3-KIT.
- HomeWorks: the processor. Lutron lists HomeWorks processors as HQP7-1, HQP7-2, HQP7-RF and HQP7-RF-2.
- RadioRA 2: the Main Repeater. Lutron’s conversion article describes RadioRA 2 Main Repeaters as the units that can be activated as RadioRA 3 processors, so a house may hold either.
Where you find it tells you something too. A Caseta hub connects to the router, so it sits wherever the router is. A HomeWorks system keeps its dimming in a panel, so there is an equipment room or a closet with modules and a processor, and the wall carries keypads. A RadioRA system does not need a panel, because the dimmers are in the wall boxes. (That difference is the whole argument of our RadioRA 3 and HomeWorks comparison.)
2. Ask where the dimming happens
Pull a wall plate off and look, or ask whoever has had the walls open. If each wall box holds a dimmer or switch that controls the lights on that circuit, the dimming happens in the wall. That describes Caseta and the RadioRA systems. If the wall boxes hold only keypads, buttons with no load wired to them, and the lighting circuits run back to a panel, the dimming happens in the panel. That is how HomeWorks is laid out.
This check has one risk and one rule. The risk is the breaker: Lutron’s own instruction for reading a label is to turn the power off before the wallplate comes off, and we say the same. The rule is that wall-box dimmers alone do not separate Caseta from RadioRA, because both use them. For that you need the controller from step one or the label from step four.
3. Read the keypads
Keypads are the part of the system you touch daily, and Lutron files them under different families. Its RadioRA 3 support page lists seeTouch keypads, Sunnata keypads, table top keypads and Pico wireless remotes, with a seeTouch example numbered RRD-W3BRL. Its HomeWorks support page lists keypad families whose numbers begin with HQ, such as HQWT-S and HQRD-W. Its Caseta page lists Pico remotes, with numbers like PJ2-3BRL, and in-wall dimmers.
Two cautions. A Pico remote appears on both the Caseta and RadioRA 3 pages, so a Pico by itself proves nothing. And a prefix in a listing is a clue, not a guarantee: we treat it as a reason to read the rest of the label, not as the answer.
4. Read the model number
This is the check that settles it. Lutron’s support pages give the method. If you still have the packaging, the model number is on the lower left of the insert card on a clamshell, or printed on the box itself. Without packaging, turn the power off, remove the wallplate and its adapter, and pull the dimmer or switch out far enough to read the label on its side. Ariadni and Toggler dimmers have no label; the number is printed on the front, near the toggle. Most model numbers are twelve to sixteen characters and start with a couple of letters and a dash. Letters near the end, before the color code, do not change the product.
Write down the numbers from three places: the controller, one dimmer and one keypad. Lutron’s support site has a model number lookup, and the same three numbers are what we ask for if you call.
Putting the four checks together
| System | The controller | Where the dimming happens |
|---|---|---|
| Caseta | Smart Hub by the router, models L-BDG2 or L-BDGPRO2 | In the wall box, at the dimmer |
| RadioRA 2 | A Main Repeater | In the wall box, at the dimmer |
| RadioRA 3 | A processor, RR-PROC3-CW or RR-PROC3-KIT | In the wall box, at the dimmer |
| HomeWorks | A processor, HQP7 models | In a panel; keypads on the wall |
What the answer changes
What you can add. Lutron lists devices by system, so what can join your house depends on which system it is. Knowing the system is what lets anyone say whether a new room, a keypad or a motorized shade can join it.
Who can program it. Lutron’s RadioRA 3 conversion article uses Lutron Designer software for that system, and our own comparison says RadioRA 3 and HomeWorks are programmed in the same Lutron software. Lutron’s support pages also describe a homeowner sharing access to their system with an installer from inside the Lutron app. When you need access help, Lutron support asks for a clear photo of the MAC address label on the processor, so that label is worth photographing before anyone needs it.
What sits on top. Lutron RadioRA 3 and HomeWorks both work with Control4 and Crestron as the whole-home layer above them, so an unlabeled Lutron system makes the rest of the house harder to service. (Our Lutron service page covers what we do on an existing system.)
If you are deciding between the two tiers for a new project, RadioRA 3 versus HomeWorks is the comparison, and our Lutron HomeWorks page covers the wired tier. If your shades are what stopped responding, the shade planning guide explains how those are laid out.
When to stop guessing
Pull the controller label and one dimmer label before you spend money on a replacement. If you cannot find a controller, or the labels do not match any list above, stop there. A house can hold a converted system, a system that grew in stages, or devices from two generations, and a wrong guess costs more than a visit. Our first step is a no-cost on-site assessment: we find the controller, read the labels, and tell you what the house has, what it connects to and what we would do first. Send a photo of the controller, or call.
About IntegrateIT. We have integrated hundreds of homes across the Kansas City metro since 2021, from our showroom and design center in Overland Park, which is by appointment and has a working Control4 system, Lutron lighting and shades, and Josh.ai voice control. Control4 Platinum Dealer with a Control4 Certified Showroom · Lutron Certified Dealer, HomeWorks Certified and Ketra Certified · Crestron dealer.
Daniel Alon, co-founder, IntegrateIT. Overland Park, KS. November 2026.
Further reading
Where to go next if this article gave you the framework but you want the brand- or install-specific depth.
- Article: RadioRA 2 to RadioRA 3 keypadsWhich RadioRA 2 parts carry over and which are replaced.→
- Article: Lutron keypad lights blinkingWhat each blink pattern means and what to try before you call.→
- Article: can my existing blinds be motorizedRetrofit or replace, window by window.→
- Service: Lutron serviceLutron systems that already exist and need a hand.→
- Lutron HomeWorks · Kansas CityThe wired tier, with the dimming in a panel.→
- Article: RadioRA 3 vs HomeWorksThe tier decision, and the questions that settle it.→
- Article: Lutron HomeWorks vs Control4 lightingHow the lighting system and the whole-home layer divide the work.→
- Article: motorized shades, window by windowWhat gets decided at every opening before anything is ordered.→
- Lutron support: finding a model numberThe maker’s own instructions for reading a device label.→
Not sure what you have?
Book a no-cost on-site assessment. We find the controller, read the labels and tell you which Lutron system it is.
Call (913) 804-7575 Text a photo of the controller Book an assessment
Questions
Questions we hear
How do I tell whether my house has Lutron Caseta?
Look for a small hub plugged in near the router. Lutron calls it the Caseta Smart Hub, formerly the Smart Bridge. It connects to the router by an Ethernet cable and runs from a power adapter, and it has a light bar and a button on the back. A MAC address sticker and a HomeKit code are printed on the bottom. If you find that hub, you are looking at Caseta. If you also have a processor in an equipment room, read the next answers, because a house can hold more than one system.
Is the Lutron app enough to tell me which system I have?
Not by itself. Lutron uses the Lutron app for Caseta and also for RadioRA 3 and HomeWorks, so seeing the app on a phone does not settle it. The label on the hardware is the sure answer.
Where is the model number on a Lutron dimmer or keypad?
On a label on the side of the device. Lutron says to turn the power off, remove the wallplate and its adapter, and pull the device out far enough to read it. Ariadni and Toggler dimmers carry no label, so their number is printed on the front, near the toggle. Most model numbers are twelve to sixteen characters and start with a couple of letters and a dash. If that is more than you want to do, we can read it for you.
How can I tell RadioRA 2 from RadioRA 3?
Not reliably by looking at the wall. Lutron has a documented path that converts a RadioRA 2 Main Repeater into a RadioRA 3 processor, so a house can hold hardware from both. The processor label and the programming file settle it. We can read both during an on-site assessment.
Can I add a room to my Lutron lighting without knowing which system it is?
It is risky. Lutron lists each system’s devices separately, and some, like the Pico remote, appear on more than one list, so you cannot assume a device you can buy will work with the system you have. The first step in any addition is naming what is already there. Once it is identified we can tell you whether the room can be added to the existing system.
Who can tell me what Lutron system is in my house in Kansas City?
IntegrateIT. We are a Lutron Certified Dealer in Overland Park, and the first step is a no-cost on-site assessment. We find the processor or hub, read the labels, and tell you which system it is, what is on it and what to do next. Call or text (913) 804-7575.
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