TP-Link Kasa · Updated June 2026
Kasa Smart Wi-Fi Dimmer Switch KS220: full specs
Kasa Smart Wi-Fi Dimmer Switch KS220. Every price and spec below is linked to its source and dated — no guesses.
Source: kasasmart.com verified ✓ corroborated verify in ledger
- Best for Best-in-class value — reliable, easy to use, and cheap enough to install throughout a home; Friendly Kasa app with clear Presets, Schedules, and Timers; responded quickly.
- Skip if Requires a neutral wire, a problem for older-home wiring is a dealbreaker.
Evidence of Record
Our dataNo independent lab has measured this product yet. 1 outlet has it on record by mention only, with no hands-on measurements published to weigh its claims against — a gap in the evidence, not a verdict on the product.
Review consensus · sourced & dated
What reviewers say about the Kasa Smart Wi-Fi Dimmer Switch KS220
Only one whitelisted outlet — Wirecutter — published a hands-on review of the exact KS220, naming it the best smart light dimmer in its March 2023 in-wall switch guide. Wirecutter tested it hands-on and found it reliable, affordable, easy to use, and flawless across Alexa, HomeKit, Google Home, and IFTTT. Noted downsides: it requires a neutral wire and caps at 300 watts, half the load of its other picks.
Based on 1 review · 1 lab-tested · 2023-03-06
Tested by Wirecutter
Consistently praised
- Best-in-class value — reliable, easy to use, and cheap enough to install throughout a home
- Friendly Kasa app with clear Presets, Schedules, and Timers; responded quickly
- Worked flawlessly across Alexa, HomeKit, Google Home, and IFTTT during testing
Commonly flagged
- Requires a neutral wire, a problem for older-home wiring
- Supports only up to 300 watts — half the load ceiling of competing picks
Where reviewers disagree Single-source: only Wirecutter tested this exact KS220, so no cross-outlet comparison is possible.
The sources (1)
The TP-Link Kasa Smart Wi-Fi Light Switch Dimmer KS220 is the best smart light dimmer. It’s reliable, easy to use, and affordable enough that you could reasonably install smart dimmers all over the house.
In all of our tests, the switch worked flawlessly and reacted quickly.
The TP-Link Kasa Smart Wi-Fi Light Switch Dimmer KS220 supports up to 300 watts of power, whereas our other picks support twice that.
Specifications
| Price (US) | Not published No firm current single-pack USD price confirmable from an authorised channel; left null rather than guessed (street roughly $17-$20) |
|---|---|
| Brand | TP-Link Kasa |
| Released | — |
| Type | dimmer |
| Protocol | wi-fi 2.4 GHz (802.11b/g/n) |
| Hub required | No |
| Neutral wire required | Yes |
| Three way capable | No |
| Works with | alexa, google_home, apple_home (HomeKit), siri |
| Single pole | Yes |
Source: kasasmart.com (verified 2026-06-20) · corroborated by amazon.com. Real product (verified Amazon B0BMWCZWS5, B&H 1738291). Wi-Fi 2.4 GHz, no hub, neutral required, single pole; works with Apple HomeKit/Siri/Alexa/Google (HomeKit confirmed in Amazon title). 150W LED max. No single-pack canonical price confirmed; priceUsd null.
Frequently asked questions
What do reviewers say about the Kasa Smart Wi-Fi Dimmer Switch KS220?
Only one whitelisted outlet — Wirecutter — published a hands-on review of the exact KS220, naming it the best smart light dimmer in its March 2023 in-wall switch guide. Wirecutter tested it hands-on and found it reliable, affordable, easy to use, and flawless across Alexa, HomeKit, Google Home, and IFTTT. Noted downsides: it requires a neutral wire and caps at 300 watts, half the load of its other picks. Praised: Best-in-class value — reliable, easy to use, and cheap enough to install throughout a home; Friendly Kasa app with clear Presets, Schedules, and Timers; responded quickly; Worked flawlessly across Alexa, HomeKit, Google Home, and IFTTT during testing. Flagged: Requires a neutral wire, a problem for older-home wiring; Supports only up to 300 watts — half the load ceiling of competing picks. (From 1 tester review, 1 lab-tested.)
How much does the Kasa Smart Wi-Fi Dimmer Switch KS220 cost?
The Kasa Smart Wi-Fi Dimmer Switch KS220 has no published US price as of 2026-06-20.
What are the Kasa Smart Wi-Fi Dimmer Switch KS220's key specs?
Kasa Smart Wi-Fi Dimmer Switch KS220 (TP-Link Kasa): type dimmer, protocol wi-fi 2.4 GHz (802.11b/g/n), hub required No, neutral wire required Yes, three way capable No. Full sourced spec sheet verified 2026-06-20.
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