Winner
Updated October 2026
Data from the official Leviton and Lutron sites.
2026 verdict
The Leviton Decora Smart Wi-Fi Switch D315S is the easier recommendation for a plain on/off circuit: it needs no hub, is Matter certified out of the box and costs less than the Lutron.
Its 15 A general-use rating also covers LED and CFL loads and a 1/3 HP motor, so it can switch a ceiling or exhaust fan as readily as a lamp. The Lutron Caseta Diva Smart Dimmer Switch takes the other side of the question: it actually dims, installs without a neutral and carries overheat protection, and owners rate it higher, but it needs the Lutron Smart Hub and has no Matter route. Pick the Leviton for hub-free Matter control; pick the Lutron when dimming comes first.
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| Feature | Leviton Decora Smart Wi-Fi Switch D315S | Lutron Caseta Diva Smart Dimmer Switch | Winner |
|---|---|---|---|
| Price | $39.00 | $69.95 | Leviton Decora Smart Wi-Fi Switch D315S |
| Rating | 4.5 | 4.7 | Lutron Caseta Diva Smart Dimmer Switch |
| Safety | None | Overheating protection | Lutron Caseta Diva Smart Dimmer Switch |
| Connectivity | 2.4 GHz WiFi, Bluetooth | None | Leviton Decora Smart Wi-Fi Switch D315S |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant | Leviton Decora Smart Wi-Fi Switch D315S |
| Warranty | 1 year | 1 year | Tie |
| Switches | 1 | 1 | Tie |
| Energy Monitoring | NO | NO | Tie |
| Power Off Memory | YES | YES | Tie |
| Status LED | YES | YES | Tie |
What the differences mean
Hub or no hub
The Leviton Decora Smart Wi-Fi Switch D315S joins a 2.4 GHz network on its own and is set up in the My Leviton app, with no bridge or gateway to buy. The Lutron Caseta Diva Smart Dimmer Switch is an ordinary dimmer until the separate Lutron Smart Hub is added, and only then does app control, schedules and voice assistants arrive.
Dimming
The Lutron Caseta Diva Smart Dimmer Switch dims incandescent and halogen up to 600 W and dimmable LED or CFL up to 150 W, with a 25 W minimum. The Leviton is an on and off switch with no dimming, so a fixture that needs variable brightness is not its job.
Open standard and Matter
The Leviton Decora Smart Wi-Fi Switch D315S is Matter certified, so scanning its code commissions it into Apple Home, SmartThings, Google Home, Alexa or Home Assistant, and Matter multi-admin lets it answer to several at once. The Lutron Caseta Diva Smart Dimmer Switch has no Matter certification and stays inside Lutron's own radio and partner integrations.
Wiring and load range
The Leviton Decora Smart Wi-Fi Switch D315S needs a neutral wire and is rated 15 A general use, 3 A of LED or CFL and 1/3 HP of motor load, which covers ceiling and exhaust fans. The Lutron Caseta Diva Smart Dimmer Switch needs no neutral and is limited to lighting loads, so it cannot switch a motor.
Format and reputation
The Leviton is a US Decora switch in a slim 104.6 x 45.7 x 27.7 mm body built for a crowded wallbox. The Lutron Caseta Diva Smart Dimmer Switch is a slightly larger US paddle dimmer at 119 x 75 x 30 mm, and it is the better reviewed of the two for reliability, which is the trade for its hub dependency and higher entry price.
Which one to buy if
- you want smart control with no hub to buy first
The Leviton Decora Smart Wi-Fi Switch D315S connects straight to 2.4 GHz Wi-Fi and is set up in its own app.
- the fixture needs to dim
The Lutron Caseta Diva Smart Dimmer Switch is a dimmer, while the Leviton switches only.
- the circuit drives a ceiling fan or exhaust fan
The Leviton Decora Smart Wi-Fi Switch D315S is rated for a 1/3 HP motor load, which a dimmer is not.
- you want one switch shared across several platforms over Matter
Matter certification lets the Leviton join Apple Home, SmartThings, Google Home, Alexa and Home Assistant at once.
- the wall box has no neutral wire
The Lutron Caseta Diva Smart Dimmer Switch is a two-wire dimmer and installs where the Leviton cannot.
Winner
$39.00
- + Price: $39.00
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Rating: 4.5 vs 4.7
- - Safety: None vs Overheating protection
$69.95
- + Rating: 4.7
- + Safety: Overheating protection
- - Price: $69.95 vs $39.00
- - Connectivity: None vs 2.4 GHz WiFi, Bluetooth
What owners say
Owners of the Lutron Caseta Diva Smart Dimmer Switch describe the same experience across a whole house: fixtures that keep dimming when the router is down, because the hub and the dimmer talk over Clear Connect rather than Wi-Fi, and switches that have run for years without dropping off. They praise the paddle-and-slider front that anyone can use, the preset level that returns on every press, and the app trim that stops fussy LEDs from flickering. Their complaints cluster on cost and setup, since the Lutron Smart Hub and the wallplate are separate purchases, and on a dimmer that needs a full-size box behind it.
Frequently Asked Questions
Which is better overall: Leviton Decora Smart Wi-Fi Switch D315S or Lutron Caseta Diva Smart Dimmer Switch?
The Leviton Decora Smart Wi-Fi Switch D315S for a hub-free on/off circuit, since it is cheaper, Matter certified and needs no bridge. The Lutron Caseta Diva Smart Dimmer Switch is the better choice when the light has to dim or when the wall box has no neutral.
What is the biggest difference between the Leviton Decora Smart Wi-Fi Switch D315S and the Lutron Caseta Diva Smart Dimmer Switch?
One switches and one dims. The Leviton Decora Smart Wi-Fi Switch D315S is an on/off switch with Matter built in and no hub required, while the Lutron Caseta Diva Smart Dimmer Switch dims but depends on the Lutron Smart Hub for anything smart.
Do the Leviton Decora Smart Wi-Fi Switch D315S and the Lutron Caseta Diva Smart Dimmer Switch need a neutral wire?
The Leviton Decora Smart Wi-Fi Switch D315S requires a neutral wire. The Lutron Caseta Diva Smart Dimmer Switch is a two-wire dimmer and does not, which is why it fits older boxes that rule the Leviton out.
Do these switches work with Matter and the voice assistants?
The Leviton Decora Smart Wi-Fi Switch D315S is Matter certified and commissions into Apple Home, SmartThings, Google Home, Alexa and Home Assistant with no hub. The Lutron Caseta Diva Smart Dimmer Switch works with the same assistants through the Lutron Smart Hub but has no Matter support.
Who should buy the Leviton Decora Smart Wi-Fi Switch D315S?
Anyone replacing a single-pole switch in a box with a neutral, who wants hub-free Matter control, a motor-capable load rating and the lower price.
Who should buy the Lutron Caseta Diva Smart Dimmer Switch?
Anyone who needs a dimmer, has no neutral in the wall box, or values the better owner reputation and the ordinary-looking paddle enough to add the Lutron Smart Hub.
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