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A smart dimmer switch replaces a standard wall switch and adds adjustable brightness, remote control, and voice or app operation for the lights connected to it. The best smart dimmer switch for a given home depends on three things: the wiring in the wall, the bulbs on the circuit, and the smart home platform you already use.
The five picks in this roundup were chosen by comparing the listed specifications and features on each product page. We have not tested any of these switches, and details like pricing and availability change, so check the live listing before you buy.
Our Picks at a Glance
The five switches below were chosen by comparing the specifications listed on each product page, not through hands-on testing. Key points to review on the listing include neutral-wire requirement, load rating, dimming range, and which assistants are supported.
The Five Picks in More Detail
Kasa Smart Dimmer Switch HS220: Best for guided installation and away mode
The Kasa HS220 is a single-pole smart dimmer that requires a neutral wire and a 2.4 GHz Wi-Fi connection. Its setup is guided by the Kasa or Tapo app with step-by-step instructions, and the listing recommends consulting an electrician if you are unfamiliar with electrical wiring. Once installed, the switch can be controlled from anywhere with the Kasa app on Android or iOS and by voice through Amazon Alexa or Google Assistant.
Beyond on/off control, the HS220 supports fade-on with a click and a double-click gentle fade-off, which the listing describes as useful while a child falls asleep. The scheduling features include timers, countdown schedules, and an Away Mode that randomly switches lights on and off to deter intruders.
Specs that matter: Single-pole, one-way circuit; neutral wire required; 2.4 GHz Wi-Fi; 120 VAC; 2.5 A rating; push-button actuator; app control for Android and iOS; voice control via Alexa or Google Assistant; operating temperature range from 32 to 104°F.
Best for: Buyers who want step-by-step install guidance, fade options, and away-mode scheduling from the Kasa or Tapo app.
Leviton Decora Smart Dimmer Switch (D36HD-1RW): Best for adjustable LED dimming
The Leviton Decora D36HD-1RW is a Wi-Fi smart dimmer with push-button control and a screwless wallplate included. Its listed features emphasize flicker-free dimming for dimmable LED bulbs and fixtures, with adjustable bulb type, minimum dim, and maximum bright settings to smooth out performance.
Light levels can be personalized with customizable fade rates and preset level options so lights come on at the brightness you want. The My Leviton Night Settings feature automatically uses softer lighting at night, which the listing suggests for kitchens and bathrooms. The switch is CSA and UL listed, rated at 300 watts, and covered by a 1-year limited warranty.
Specs that matter: 300 W rating; push-button control; white; 1.09 x 1.8 x 4.12 inches; CSA and UL listed; screwless wallplate included; 1-year limited warranty; Wi-Fi enabled.
Best for: People who want fine-tuned LED dimming and softer nighttime light without extra app complexity.
Tapo Matter Smart Dimmer Switch S505D: Best for Matter-certified multi-platform homes
The Tapo S505D is a single-pole smart dimmer sold as a 2-pack. Setup requires neutral wiring, a 2.4 GHz Wi-Fi connection, and the Tapo app; the listing says wiring simply replicates your old switch. The switch offers full 0-100% dimming and fade-on/fade-off transitions that are described as smooth lighting changes to prevent eye discomfort.
Because the switch is Matter-certified, the listing says it works with Amazon Alexa, Apple HomeKit, Google Home, and Samsung SmartThings, with voice control through Alexa, Siri, Google Assistant, or Samsung Bixby. Custom schedules can turn lights on, off, or dim them at specific times to fit your routine.
Specs that matter: 2-pack; neutral wire required; 2.4 GHz Wi-Fi; 120 V; 2.5 A; push-button actuator; one-way circuit; Matter-certified; compatible with Alexa, HomeKit, Google Home, and SmartThings; voice via Alexa, Siri, Google Assistant, or Bixby; operating temperature range from 32 to 104°F.
Best for: Homes that use more than one smart home platform or that want Matter certification in a two-switch package.
Amazon Basics Smart Dimmer Switch: Best for a no-hub Alexa setup
The Amazon Basics smart dimmer is a single-pole switch built to work exclusively with Alexa. It needs a neutral wire and a 2.4 GHz Wi-Fi connection, and no additional smart home hub or separate app is required. Installation is supported by a step-by-step video plus a user manual and troubleshooting guide.
With the switch connected to the Alexa app, you can build routines to schedule lights on and off and control them remotely from anywhere. Voice control is limited to Alexa, so Google Assistant and Siri are not listed as compatible options.
Specs that matter: Works exclusively with Alexa; neutral wire required; 2.4 GHz Wi-Fi; no hub required; 120 V; 4 A; voice control; pole mount; one-way circuit; upper temperature rating of 40°C.
Best for: Shoppers who are already in the Alexa ecosystem and want a minimal setup without extra hardware.
GHome Smart Dimmer Switch SW2: Best for touch-slider dimming and group control
The GHome SW2 is a 3-pack of single-pole dimmers with a touch screen that adjusts brightness by sliding a finger across the switch. The listing says you can set a preferred dimming range in the app, and a low-end range value was added to address a few bulbs that flicker at low brightness.
The dimmer works with Alexa and Google Assistant for voice control, while the app provides remote access, schedules, timers, and group control so multiple switches can be managed together. It requires a neutral wire and a 2.4 GHz Wi-Fi connection, and the listing notes it is not compatible with smart bulbs. Maximum outputs are 150 W for LED and CFL bulbs and 450 W for incandescent bulbs at 120 VAC.
Specs that matter: 3-pack; 1%-100% dimming; touch-slider control; neutral wire required; 2.4 GHz Wi-Fi; 120 VAC, 60 Hz; 4 A max; 150 W LED and CFL, 450 W incandescent; works with Alexa and Google Assistant; app, touch, and voice control; wall mount; not compatible with smart bulbs; upper temperature rating of 40°C.
Best for: Someone who wants touch-slider dimming plus group control across several rooms.
How to Choose
Smart dimmer switches look similar, but the details on the listing decide whether a switch will work in your home. Use the specifications below, along with our smart dimmer switch guide, to narrow down your choice.
Wiring: single-pole and neutral wire
Four of the five listings in this roundup require a neutral wire: the Kasa, Tapo, Amazon Basics, and GHome models each list it as a setup requirement. The Leviton listing does not specify a neutral-wire requirement, so confirm it on the product page before buying. The same four listings describe single-pole wiring; the Leviton listing does not state the pole configuration.
Kasa’s listing recommends consulting an electrician if you are unfamiliar with electrical wiring. GHome’s listing adds that a dual-band router must be switched to 2.4 GHz for setup if it also supports 5 GHz.
Dimming range and bulb compatibility
Tapo lists full 0-100% dimming, and GHome lists 1-100% with a touch slider. Leviton describes flicker-free dimming for dimmable LED bulbs and fixtures, with adjustable bulb type, min dim, and max bright settings. GHome’s listing says the switch is not compatible with smart bulbs, and it sets maximum outputs of 150 W for LED and CFL and 450 W for incandescent. For more on matching bulbs to a dimmer, see our article on dimmable LED bulbs and smart dimmers.
Voice assistants and smart home platforms
Alexa is listed for four of the five picks: Kasa, Tapo, Amazon Basics, and GHome. Google Assistant is listed for Kasa, Tapo, and GHome. Amazon Basics works exclusively with Alexa and needs no hub. Tapo adds Siri and Samsung Bixby through its Matter certification, with support for Apple HomeKit, Google Home, and Samsung SmartThings. Leviton’s listing describes smartphone control but does not name a voice assistant.
Scheduling and extras
Kasa lists timers, countdown schedules, and an Away Mode that randomly switches lights on and off. Amazon Basics uses Alexa routines for scheduling and remote control. Tapo lets you schedule lights to turn on, off, or dim at specific times. GHome lists schedules based on sunrise and sunset, plus group control for multiple switches. If you plan to schedule exterior lights, the guide to automating outdoor lights explains the options.
The table below summarizes the specifications listed for each pick.
| Product | Load rating | Voltage | Dimming | Platforms listed | Notes from listing |
|---|---|---|---|---|---|
| Kasa Smart Dimmer Switch HS220 | 2.5 A | 120 VAC | Dimmer; fade-on and double-click gentle fade-off | Kasa app (Android and iOS), Amazon Alexa, Google Assistant | Neutral wire required; Away Mode; 32-104°F operating range |
| Leviton Decora Smart Dimmer Switch D36HD-1RW | 300 W | Not listed | Flicker-free LED dimming; adjustable min dim and max bright | Smartphone control; assistant not listed | CSA and UL listed; screwless wallplate included; 1-year limited warranty |
| Tapo Smart Dimmer Switch S505D | 2.5 A | 120 V | 0-100%; fade on/off | Alexa, Siri, Google Assistant, Bixby; Matter-certified | 2-pack; neutral wire required; 32-104°F operating range |
| Amazon Basics Smart Dimmer Switch | 4 A | 120 V | Dimmer; range not listed | Alexa only | No hub required; neutral wire required; guided installation video |
| GHome Smart Dimmer Switch SW2 | 4 A; 150 W LED/CFL, 450 W incandescent | 120 VAC | 1-100%; touch slider | Alexa, Google Assistant | 3-pack; neutral wire required; not compatible with smart bulbs |
FAQ
Do these smart dimmer switches need a neutral wire?
Four of the five listings say a neutral wire is required: the Kasa, Tapo, Amazon Basics, and GHome models. The Leviton listing does not mention a neutral wire, so check the product page for that detail before installation.
Which voice assistants work with these switches?
Alexa is listed for the Kasa, Tapo, Amazon Basics, and GHome models. Google Assistant is listed for Kasa, Tapo, and GHome. Tapo also lists Siri and Samsung Bixby. Leviton’s listing does not name an assistant.
Will a smart dimmer work with my LED bulbs?
Leviton’s listing specifically mentions flicker-free dimming for dimmable LED bulbs, with adjustable bulb type, min dim, and max bright. GHome lists 150 W as the maximum LED output and says the switch is not compatible with smart bulbs. Tapo and Kasa list dimming and fade features but do not specify LED wattage limits. If you see flicker after setup, try the fixes in our guide to smart bulbs flickering or unresponsive.
What are the differences in load ratings?
The Kasa and Tapo switches both list a 2.5 A rating at 120 V. The Amazon Basics and GHome switches list 4 A at 120 V. Leviton lists 300 W. GHome also lists maximum outputs of 150 W for LED and CFL bulbs and 450 W for incandescent bulbs.
The right smart dimmer switch is the one that matches your wiring, your bulbs, and the assistants you already use. Compare the specs on each listing, confirm the neutral wire and load limits, and you can narrow your choices down to a switch that fits your home.
About Colin Foster
Colin Foster is part of our editorial team and reviews and edits our smart home guides, checking product details against manufacturer specifications and owner feedback.
