Best Smart Light Switches in 2027

The Kasa KS230 kit ranks first because it covers the jobs most buyers list. It replaces a three-way switch, dims, and needs no hub. Those are the three questions behind this keyword. The maker lists Wi-Fi only, so there is no Matter support. Control runs through the Kasa or Tapo app.

It does need a neutral wire. The listing says so plainly, and it also needs 2.4 GHz Wi-Fi. Older homes may lack a neutral wire, so check the switch box first. The listing recommends an electrician if wiring is unfamiliar. The app guides setup step by step, which helps when you handle a three-way circuit for the first time.

Load limits are modest. It handles incandescent bulbs up to 300 W and dimmable LED up to 150 W. Both figures sit at the bottom of the models that list them, so add up your fixture wattage. Voice control works with Alexa, Google Home and SmartThings. Siri is not listed. The warranty runs 2 years.

Ecosystem fit is the strength here. The Leviton Decora Smart Dimmer lists Wi-Fi plus Matter, Apple Home support, and voice control through Alexa, Google Assistant and Siri. That is a wide spread for a single household that mixes platforms. Matter is a shared standard meant to work across different brands. It ranks second in our ranking overall.

It supports three-way wiring and dimming. The listing mentions adjustable bulb type, minimum dim and maximum bright settings, which help with LED flicker. Fade rates and preset levels are also listed. These settings matter if you dim LED fixtures in bedrooms or dining rooms, where uneven low-end dimming is easy to notice.

Several details are missing. The maker's data does not publish max load, warranty, or whether a hub is needed. It does not work without a neutral wire, so plan on having one. Check the box before you buy, and confirm your bulbs are dimmable.

The Leviton Decora Smart Switch D315S is a plain on/off switch in our data. No dimming spec is listed, so it suits lights you only need to turn on or off, such as porch, closet or exterior fixtures. The listing highlights scheduling, including turning exterior lights on at sunset. That keeps the job simple.

Compatibility is the main draw. It lists Wi-Fi plus Matter, Apple Home support and three-way support. Voice control covers Alexa, Google Assistant and Apple Siri. The listing also names SmartThings and Home Assistant. For a home built around several platforms, that list is long, and it ranks third on our ranking.

Like the other Leviton, it does not work without a neutral wire, according to the spec data. Max load, hub requirement and warranty are not published. Dimming is not listed, so do not buy it to dim bulbs. If you need dimming, the Leviton dimmer above is the closer match.

The GHome SW2 is a dimmer sold in a pack of three. It lists a 450 W incandescent limit, the second-highest figure among the models that list it, behind only the 600 W Kasa HS200. Its LED limit is 150 W, which matches the lowest figure listed.

Dimming is a core feature. The listing describes a touch slider and app-set dimming range, plus a range setting meant to reduce flicker in a few bulbs at low brightness. The listing says it is not compatible with smart bulbs. Schedules, timers and group control are included, which suits a whole-house upgrade across several switches.

It needs a neutral wire and 2.4 GHz Wi-Fi, and no separate hub. Voice control works with Alexa and Google Assistant. There is no Matter spec listed, no Apple Home support listed, and no three-way support listed. That makes it a better fit for Alexa or Google homes with simple wiring. It ranks fourth on our ranking.

The Kasa Smart HS200 is a single-pole on/off switch. It lists 600 W for both incandescent and LED loads, the highest figures among the models that list them. That means it can run larger light groups on one switch than the dimmers that list a limit. No dimming is listed.

This is a single-pole switch, and the spec data shows no three-way support. Use it only where one switch controls the light. Three-way circuits need a different model. The listing says it requires neutral wiring and 2.4 GHz Wi-Fi, and recommends an electrician if you are unfamiliar with wiring. The app walks through installation step by step.

Voice control covers Alexa and Google Assistant. Apple Home and Matter are not listed, so Siri users should look at the Leviton models. Hub requirement and warranty are not published. The listing mentions scheduling, timers and an away mode that randomly switches lights to suggest someone is home. It ranks fifth on our spec score.