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.

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.

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 Oct 31, 2026.

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.

• Software 1.3.0 · certified Mar 22, 2025 · Matter 1.3 · CSA25198MAT45290-24 · this page's certificate
• Software 1.0.0 · certified Jan 6, 2023 · Matter 1.0 · CSA23100MAT40613-24

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 Oct 31, 2026.

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