Quick answer: the Lutron Caseta dimmer is the best smart light switch for most homes. It’s very reliable, works without a neutral wire (common in older homes) and supports Alexa, Google and Apple Home, though it needs Lutron’s hub. On a budget, Kasa Wi-Fi switches cost far less and need no hub, but they do need a neutral wire. For Matter, choose Leviton Decora Smart.
How we put this guide together: written by Md. Enamul Arafath for TopSmartGear, using the makers’ specifications, retailer prices and published expert and owner reviews. Prices are approximate US prices and change often. This is a research-based guide, not a hands-on test. Sources include the Connectivity Standards Alliance’s Matter overview. Read how we review.
Best smart light switch: our picks at a glance
| Switch | Best for | Neutral wire? | Hub? | Approx. price |
|---|---|---|---|---|
| Lutron Caseta Smart Dimmer | Best overall, older homes | Not needed | Lutron Smart Hub | Check current price |
| Kasa Smart Switch HS200 / Dimmer HS220 | Best budget | Required | No | Check current price |
| Kasa Matter switches (KS205 / KS225) | Budget with Matter | Required | No | Check current price |
| Leviton Decora Smart Wi-Fi (2nd Gen) | Matter and a classic look | Required | No | Check current price |
| Philips Hue Dimmer Switch | No wiring at all | No wiring | For Hue bulbs | Check current price |
First: do you have a neutral wire?
Most Wi-Fi smart switches need a neutral wire, usually a bundle of white wires at the back of the switch box, to stay powered when the light is off. Newer homes usually have one; many older homes don’t. Turn off the breaker, remove the switch plate and look. No neutral? Lutron Caseta is the easiest answer.
1. Lutron Caseta Smart Dimmer: best overall
Caseta uses Lutron’s own radio rather than Wi-Fi, so it responds quickly and keeps working even when your internet drops. It installs without a neutral wire, and the included Pico remote can act as a wireless second switch, which makes three-way setups simple. It needs the Lutron Smart Hub, sold in starter kits. Works with Alexa, Google Home and Apple Home.
2. Kasa Smart Switches: best budget
Kasa’s HS200 switch and HS220 dimmer connect straight to 2.4 GHz Wi-Fi with no hub, work with Alexa and Google, and cost a fraction of Caseta. Newer Kasa models such as the KS205 and KS225 add Matter support. All need a neutral wire.
3. Leviton Decora Smart: best for Matter
Leviton’s Decora Smart switches and dimmers look like classic paddle switches and support Matter, so they work with Alexa, Google and Apple Home without extra apps. They need a neutral wire. A good choice if you want a traditional look and future-proof support.
4. Philips Hue Dimmer Switch: no wiring at all
Renting or don’t want to touch wiring? Leave the wall switch on, use Hue smart bulbs, and stick the battery-powered Hue Dimmer Switch on the wall. It’s the simplest smart switch there is. Read our Philips Hue review and smart lighting for renters.
Smart switches vs smart bulbs
- Choose a smart switch for rooms with several ceiling lights, or when family and guests use the wall switch out of habit.
- Choose smart bulbs for color, lamps and renting. See our best smart light bulbs.
- Don’t put smart bulbs behind a smart dimmer: dim with one or the other.
Installation safety
Always switch off the circuit at the breaker and confirm the power is off with a voltage tester before removing a switch. Label wires before disconnecting them. If your wiring doesn’t match the instructions, or you’re unsure, hire a licensed electrician.
Ready to fit one? Follow our step-by-step guide on how to install a smart light switch, including what to do with no neutral wire or a 3-way switch.
Using Alexa or Google? See smart lights that work with Alexa and smart lights that work with Google Home. Smart switches are often discounted on Black Friday.
Frequently asked questions
Do smart light switches need a neutral wire?
Most Wi-Fi switches do, including Kasa and Leviton Decora Smart. Lutron Caseta works without one, and the battery-powered Philips Hue Dimmer Switch needs no wiring at all.
Do smart light switches need a hub?
Lutron Caseta needs the Lutron Smart Hub. Kasa and Leviton Decora Smart switches connect to Wi-Fi without a hub, and the Hue Dimmer Switch works with Hue bulbs.
Can I install a smart light switch myself?
Many people do, but switch off the circuit at the breaker and confirm the power is off with a voltage tester first. Label the wires before disconnecting them, and hire a licensed electrician if your wiring doesn’t match the instructions.
