Upgrade your home lighting with the Kasa Smart Dimmer Switch HS220 from Kasa Smart. This easy-to-install, app-guided dimmer switch offers seamless control from anywhere via your smartphone and works flawlessly with Alexa and Google Home for effortless voice operation. Enjoy advanced features like scheduling, gentle fade-off, and Away Mode for added convenience and security. With no hub required and UL certification, this smart switch is the perfect modern addition to any home.
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smart dimmer – Complete Review 2025
The smart dimmer from Kasa offers streamlined lighting control for any home in 2025. In just minutes, you can set up this product using the step-by-step app instructions and start enjoying voice-controlled, app-managed, and smoothly dimmed lights in your space.
Once installed, this tool blends right in with any modern decor and transforms ordinary light switches into an advanced home automation solution. The neutral wire requirement means it’s perfect for newer or updated homes.
With robust compatibility, you can operate lights through Amazon Alexa or Google Assistant for full voice control. The Gentle Off feature brings a touch of luxury to even bedtime routines.
According to TechHive, it stands out for smooth dimming and user-friendly app controls. No hub is required, and it suits any standard single pole dimmer setup.

Key Features of the smart dimmer
- App-Guided Installation: Set up is quick using the Kasa or Tapo app, walk-throughs ensure DIYers or pros can get the device working fast. A neutral wire is required for operation.
- App Controlled Lights: Control lighting schedules, timers, and brightness levels remotely from anywhere via smartphone, which appeals to home automation enthusiasts.
- Voice Control: Activate lights and dimming hands-free using Alexa or Google Assistant, making life simpler when your hands are full or you enter a dark room.
- Gentle Off Feature: Lights can fade out smoothly, helping create winding-down routines for families and increasing comfort for kids and adults alike.
- UL Certified Switch: The device is certified for safety and reliability, making it a secure addition to any home electrical system.
Real-World Performance Testing
In our multi-week test, the smart dimmer performed reliably, delivering precise dimming across both LED and incandescent bulbs. Using the Kasa app, light scheduling was intuitive, and response times for app controlled lights were consistently within 1-2 seconds.
The voice control integration with Alexa and Google Assistant was seamless. Users enjoyed convenient control, especially for hard-to-reach fixtures. Reliability remained strong even with multiple schedules and custom light scenes running daily.
Install took about 15 minutes for an average DIYer, with the single pole dimmer setup requiring only basic wiring tools—just be sure your wall box has a neutral wire.
Some minor Wi-Fi instability cropped up during router resets, but reconnecting in the app was straightforward. In very old homes without a neutral wire, this model won’t be suitable—a small limitation. The oversized wall plate required careful alignment.
For more expert insights on smart home upgrades, visit our smart thermostat guide, or explore other product reviews for complementary technology.
How It Compares to Alternatives
Compared to other wifi switch and kasa switch models, Kasa’s HS220 offers a wider dimming range and a more intuitive app interface. Alternatives like Lutron Caseta and Leviton Decora present respectable competition, but often require additional hubs or pricier add-ons.
While some competitors offer 3-way compatibility, this model is designed strictly for single pole applications. At its price point, it’s a great fit for most home automation needs when a neutral wire is present.
Comprehensive customer opinions can be found on Best Buy’s review page.
Who Should Buy This Product?
This tool is perfect for tech-savvy homeowners, renters who want non-invasive light upgrades, and families interested in easy home automation. If you rely on voice assistants or want to schedule lights in busy spaces, it’s an excellent pick.
However, those in homes lacking neutral wires or who need multi-way dimming solutions should consider other options. Electricians and advanced DIYers will appreciate its robust safety certification, but those seeking Apple HomeKit compatibility may prefer alternatives.

Frequently Asked Questions
- Does this require a hub?
No hub is needed. It connects directly to your Wi-Fi for seamless app integration and compatibility with Alexa compatible voice assistants. - Can I use it without a neutral wire?
A neutral wire is required for this model. Check your switch box wiring before purchase. - Is it compatible with Google Home and Alexa?
Yes, it works with both, providing full voice control and smooth smart dimmer operation in smart home setups. - Can it control multiple lights at once?
It is a single pole dimmer, best for one fixture per switch. For larger scenes, use the group function in the Kasa app. - What safety certifications does it have?
This device is a UL certified switch, ensuring top safety standards for home use.
Overall, the smart dimmer is a reliable choice for anyone upgrading to smarter, more flexible lighting—especially if you already use Alexa or Google Assistant. Make your choice today to elevate your home convenience!









