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KasaSwitches

TP-Link Kasa Smart KS225 Wi‑Fi Light Switch & Dimmer (Matter, 2‑Pack)

CSA Certified

This switch is Matter certified (certificate CSA25198MAT45290-24, certified Mar 22, 2025). A certified Matter device can be added to any Matter controller whose app supports its device type, such as Apple Home, Google Home, Alexa, SmartThings or Home Assistant; features vary by app. The maker hasn’t named platforms on a page we hold. We have no verified store link for it yet.

Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant

CSA Matter certified (certificate CSA25198MAT45290-24).

At a glance: Matter certified: Yes, Mar 22, 2025 · Connectivity: Wi-Fi

Works with
Matter certified as a dimmable light, so it can work with Matter apps such as Apple Home, Google Home, Alexa and SmartThings when the app supports its device type; supported features vary by app. The maker hasn’t named platforms on a page we hold.
CSA certificate
CSA25198MAT45290-24, certified Mar 22, 2025
Model number
KS225

Updated : the last change to this page’s certification, platform or store facts.

Not sold by a US store we can verify. Similar CSA-certified dimmable smart lights you can buy:

Independent guide. We may earn a commission through affiliate links. Direct non-affiliate links are labeled. How our links work

Why these: we have no US store link we can verify for this exact model. Each is a different product, certified by the CSA as the same device type, dimmable light, with a CSA certificate for its own model and a store link we checked. Models on the same network (Wi-Fi) come first; the order is not a ranking.

TP-Link Kasa Smart KS225 Wi‑Fi Light Switch & Dimmer (Matter, 2‑Pack)

Is this switch sold in the US?

MatterCatalog has no US store link for this exact model yet. Its CSA Matter certificate, CSA25198MAT45290-24, is dated Mar 22, 2025. Certification alone does not mean it is sold in the US.

What you can do

We link a US store only after its listing matches this exact model. We check only stores our rules let us read, so a store we could not check may still sell it.

No US store link yet

We link to a store only after its listing matches this exact model, region and package.

Shop switches you can buy now →

Matter 1.3 certificate

Its certificate, CSA25198MAT45290-24, is for Matter 1.3, certified Mar 22, 2025. The Matter version is the specification version on the certificate's ledger record.

Source: CSA Distributed Compliance Ledger, read Nov 10, 2026.

What Matter 1.3 added, and which devices use it →

Certified software versions

The CSA ledger lists 2 certified software versions for the device on certificate CSA25198MAT45290-24. The most recent is software 1.3.0, certified Mar 22, 2025, for Matter 1.3. That is the certificate this page shows.

Certification covers each software version listed. It does not establish the software on a unit you buy.

Source: CSA Distributed Compliance Ledger, device record (vendor ID 5009, product ID 514), read Nov 10, 2026.

TP-Link Kasa Smart KS225 Wi‑Fi Light Switch & Dimmer (Matter, 2‑Pack) is a smart switch; it is CSA Matter certified on March 22, 2025 (certificate CSA25198MAT45290-24). TP-Link says it requires a neutral wire.

Wi-Fi

Specifications

Brand
Kasa
Category
Switches
Protocols
Wi-Fi
Certificate ID
CSA25198MAT45290-24
Certified
Mar 22, 2025
Model
KS225
Firmware
1.3.0

Ecosystem compatibility

Matter

Quick answers

Is this switch Matter certified?
Yes. MatterCatalog matches it to CSA Matter certificate CSA25198MAT45290-24, certified Mar 22, 2025.
Does this switch work with Apple Home or HomeKit?
Likely. It is Matter certified (certificate CSA25198MAT45290-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Apple Home on a page we hold. Apple says an iPhone using iOS 18 or later can add Matter accessories to the Home app without a home hub. Apple’s Matter page lists lights among the accessory types the Home app supports.

Add a Matter device to Apple Home

Does this switch work with Google Home?
Likely. It is Matter certified (certificate CSA25198MAT45290-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Google Home on a page we hold. Google says you need a Matter-enabled hub device set up on your home wireless network before you can add Matter devices to Google Home. Google’s supported-device-types page lists the Dimmable Light type.

Add a Matter device to Google Home

Does this switch work with Alexa?
Likely. It is Matter certified (certificate CSA25198MAT45290-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Alexa on a page we hold. Alexa needs a Matter-compatible Echo; Amazon says its Echo devices support “a subset of Matter 1.5 and lower device types”, so check that yours does.

Add a Matter device to Alexa

Does this switch work with Samsung SmartThings?
Likely. It is Matter certified (certificate CSA25198MAT45290-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named SmartThings on a page we hold. SmartThings adds Matter devices through the SmartThings app and a Matter controller.

Add a Matter device to SmartThings

Does this switch work with Home Assistant?
Likely. It is Matter certified (certificate CSA25198MAT45290-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Home Assistant on a page we hold. Home Assistant says: “Adding a new Matter device only works in the Home Assistant Companion app.”

Add a Matter device to Home Assistant

Does this switch need a hub or a Thread border router?
It depends on the network it uses, which this record does not state without ambiguity. A Thread device needs a Thread border router; a Wi-Fi device does not. Either needs your platform’s Matter controller.
When was this switch Matter certified?
The CSA certified it on Mar 22, 2025 (certificate CSA25198MAT45290-24). That is its certification date, not a retail release date, which MatterCatalog does not state.

From this product’s catalog record, not hands-on testing. Editorial policy

Share:

Best Matter Smart Switches 2026

Buying guide to in-wall smart switches and dimmers with Matter support, compared from specifications.

Read the full buying guide →

More Matter switches

Each has a US store link. Models on the same Matter network with a CSA certificate on file come first.

All 125 Matter switches sold in the US →All Kasa Matter devices →

Same CSA certificate, other catalog pages

These pages list a record with the same CSA certificate, CSA25198MAT45290-24. Check the pack size and finish on each page.

For publishers: link to this certificate

Writing about the TP-Link Kasa Smart KS225 Wi‑Fi Light Switch & Dimmer (Matter, 2‑Pack)? Show your readers where to see its CSA Matter certificate, CSA25198MAT45290-24, certified Mar 22, 2025. Paste one of these into your page. It is free and optional, with no sign-up. The link goes to this page, which states the certificate and its source.

Text link

Works anywhere HTML works, including a blog post.

<a href="https://mattercatalog.com/product/tp-link-kasa-smart-ks225-wifi-light-switch-and-dimmer">TP-Link Kasa Smart KS225 Wi‑Fi Light Switch &amp; Dimmer (Matter, 2‑Pack): CSA Matter certificate CSA25198MAT45290-24, see the certificate on MatterCatalog</a>

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