Product Library / Switches & Dimmers
Research profile · verified 2026-09-30 · sources re-checked 2026-11-02Compatibility at a glance
Choose your platform to see its setup and functions. Your choice carries across product pages.
A connection can work while individual controls or automations remain unconfirmed. Read the connection details ↓
Protocols: WIFI · MATTER[1][2][3][4][13][18][19][24][27][28][30][43][52]
Before you buy
Both use Matter over your home Wi-Fi. Choose the setup that fits how you want to control it.
Use your existing Wi-Fi and iPhone.
What you gainControl it in the Home app without adding a HomePod or Apple TV.
Keep in mindYour iPhone needs to be on the home network for this path.
Add a home hub that stays connected at home.
What you gainThe home hub adds remote access and shared control.
Keep in mindA home hub provides Apple Home’s automation support. The functions a routine can use still depend on this device and connection; check the function table below.
No, for this connection. This device uses Wi-Fi. A HomePod or Apple TV here serves as an Apple home hub; Thread support is a separate role used by Thread devices.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
No native HomeKit; Apple Home and Siri work only through Matter; an iPhone on iOS 18 or later can add and control it over Matter without a home hub, and a HomePod, HomePod mini or Apple TV is still needed to control it away from home, run automations and share control. TP-Link names the Apple Home app explicitly.[16][18][27][43][52]
Compare the documented setups and their requirements. Read each limit before choosing a route.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainReach the device through the documented account connection.
Keep in mindInternet and the vendor account are required. Check which functions this route exposes.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainUse the platform’s Matter support for local communication.
Keep in mindUse a compatible Matter controller. The function table describes the recorded primary connection; do not assume every function transfers to the alternative.
Check the function table and setup notes for this route. An alternative connection does not inherit every capability of the recorded primary connection. A Thread border router, a Matter controller and a platform home hub are different roles; suitable hardware may provide more than one.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Works with Google Home per the official datasheet; Matter is an alternative path.[16][18][27]
Compare the documented setups and their requirements. Read each limit before choosing a route.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainReach the device through the documented account connection.
Keep in mindInternet and the vendor account are required. Check which functions this route exposes.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainUse the platform’s Matter support for local communication.
Keep in mindUse a compatible Matter controller. The function table describes the recorded primary connection; do not assume every function transfers to the alternative.
Check the function table and setup notes for this route. An alternative connection does not inherit every capability of the recorded primary connection. A Thread border router, a Matter controller and a platform home hub are different roles; suitable hardware may provide more than one.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Works with Alexa per the official datasheet; Matter is an alternative path. The native path rides the TP-Link cloud account link.[16][18][27]
Compare the documented setups and their requirements. Read each limit before choosing a route.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainUse the SmartThings connection named in the official datasheet.
Keep in mindThe record does not establish the transport or intermediate equipment for this primary connection.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainUse the platform’s Matter support for local communication.
Keep in mindUse a compatible Matter controller. The function table describes the recorded primary connection; do not assume every function transfers to the alternative.
Check the function table and setup notes for this route. An alternative connection does not inherit every capability of the recorded primary connection. A Thread border router, a Matter controller and a platform home hub are different roles; suitable hardware may provide more than one.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Works with SmartThings per the official datasheet; Matter is an alternative path.[16][18][27]
Follow the documented setup. Read the equipment details and connection limits below.
TP-Link Kasa Smart Wi-Fi Dimmer Switch KS225 (Matter)
What you gainReach the device through its documented local network integration.
Keep in mindRead the setup notes for required credentials, firmware, pairing and supported functions. Local communication does not establish every function or remote access.
Check the function table and setup notes for this route. An alternative connection does not inherit every capability of the recorded primary connection. A Thread border router, a Matter controller and a platform home hub are different roles; suitable hardware may provide more than one.
These paths summarize documented setup options. Check the function table for the connection covered by each recorded capability.
Official tplink integration, local polling, KS225 explicitly listed, with the footnote 'Model requires authentication': TP-Link cloud credentials must be entered once to enable local access.[5][22][26][32][37][44][55]
One device can provide more than one role. These are setup requirements, not a shopping list of separate purchases.
What could you do with this?
Start with a documented control or event. The selected connection shows what is confirmed for that platform.
Apple Home · Works
This device supports on/off.
Setup: See the equipment information above.
No native HomeKit; Apple Home and Siri work only through Matter; an iPhone on iOS 18 or later can add and control it over Matter without a home hub, and a HomePod, HomePod mini or Apple TV is still needed to control it away from home, run automations and share control. TP-Link names the Apple Home app explicitly.
Connection documentation: [16] [18] [27] [43] [52]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
Apple Home — Matter path · checked 2026-09-04
Apple Home · Works
This device supports brightness.
Setup: See the equipment information above.
No native HomeKit; Apple Home and Siri work only through Matter; an iPhone on iOS 18 or later can add and control it over Matter without a home hub, and a HomePod, HomePod mini or Apple TV is still needed to control it away from home, run automations and share control. TP-Link names the Apple Home app explicitly.
Connection documentation: [16] [18] [27] [43] [52]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
Apple Home — Matter path · checked 2026-09-04
Google Home · Works
This device supports on/off.
Setup: See the equipment information above.
Works with Google Home per the official datasheet; Matter is an alternative path.
Connection documentation: [16] [18] [27]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
tp-link.com · checked 2026-09-30
Alexa · Works
This device supports on/off.
Setup: See the equipment information above.
Works with Alexa per the official datasheet; Matter is an alternative path. The native path rides the TP-Link cloud account link.
Connection documentation: [16] [18] [27]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
tp-link.com · checked 2026-09-30
SmartThings · Works
This device supports on/off.
Setup: See the equipment information above.
Works with SmartThings per the official datasheet; Matter is an alternative path.
Connection documentation: [16] [18] [27]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
tp-link.com · checked 2026-09-30
Home Assistant · Works
This device supports on/off.
Setup: See the equipment information above.
Official tplink integration, local polling, KS225 explicitly listed, with the footnote 'Model requires authentication': TP-Link cloud credentials must be entered once to enable local access.
Connection documentation: [5] [22] [26] [32] [37] [44] [55]
Device documentation: [11] [18] [27] [43] [52]
tp-link.com · checked 2026-11-04
home-assistant.io · checked 2026-09-24
home-assistant.io · checked 2026-10-04
api.github.com · checked 2026-11-04
A documented control or event is one part of a setup. It does not by itself establish a complete automation.
A platform connection does not confirm every function. Controls and reported events are shown separately from what an automation can use.
Compare all five platforms. On a narrow screen, scroll the table sideways.
| Device function | Apple HomeWorks[16][18][27][43][52] | Google HomeWorks[16][18][27] | AlexaWorks[16][18][27] | SmartThingsWorks[16][18][27] | Home AssistantWorks[5][22][26][32][37][44][55] |
|---|---|---|---|---|---|
| On/offDevice control | Control Supported for this Matter device type Automation ✓ Listed for this device type | Control Not stated Automation — | Control Not stated Automation — | Control Not stated Automation — | Control Not stated Automation — |
| BrightnessDevice control | Control Supported for this Matter device type Automation ✓ Listed for this device type | Control Not stated Automation — | Control Not stated Automation — | Control Not stated Automation — | Control Not stated Automation — |
✓ Documented for this connection. × A stated limit. ◐ A partial function. ? Not established. A listed device function does not establish a complete routine, its other equipment or any plan requirements.
A device-type listing describes the platform’s general support; it does not confirm this exact model.
No native HomeKit; Apple Home and Siri work only through Matter; an iPhone on iOS 18 or later can add and control it over Matter without a home hub, and a HomePod, HomePod mini or Apple TV is still needed to control it away from home, run automations and share control. TP-Link names the Apple Home app explicitly.[16][18][27][43][52]
Works with Google Home per the official datasheet; Matter is an alternative path.[16][18][27]
Works with Alexa per the official datasheet; Matter is an alternative path. The native path rides the TP-Link cloud account link.[16][18][27]
Works with SmartThings per the official datasheet; Matter is an alternative path.[16][18][27]
Official tplink integration, local polling, KS225 explicitly listed, with the footnote 'Model requires authentication': TP-Link cloud credentials must be entered once to enable local access.[5][22][26][32][37][44][55]
Platform documentation:
tp-link.com · checked 2026-11-04
Apple Home — Matter path · checked 2026-09-04
tp-link.com · checked 2026-09-30
home-assistant.io · checked 2026-09-24
home-assistant.io · checked 2026-10-04
api.github.com · checked 2026-11-04
Listed device functions are established from vendor documentation. An ability missing here is unestablished, not necessarily absent.
| Ecosystem | Support | The catch |
|---|---|---|
| Amazon Alexa | WorksWorks with this ecosystem[16][18][27] | Works with Alexa per the official datasheet; Matter is an alternative path. The native path rides the TP-Link cloud account link. |
| Google Home | WorksWorks with this ecosystem[16][18][27] | Works with Google Home per the official datasheet; Matter is an alternative path. |
| Apple Home | WorksWorks with this ecosystem[16][18][27][43][52] | No native HomeKit; Apple Home and Siri work only through Matter; an iPhone on iOS 18 or later can add and control it over Matter without a home hub, and a HomePod, HomePod mini or Apple TV is still needed to control it away from home, run automations and share control. TP-Link names the Apple Home app explicitly. |
| SmartThings | WorksWorks with this ecosystem[16][18][27] | Works with SmartThings per the official datasheet; Matter is an alternative path. |
| Home Assistant | WorksWorks with this ecosystem[5][22][26][32][37][44][55] | Official tplink integration, local polling, KS225 explicitly listed, with the footnote 'Model requires authentication': TP-Link cloud credentials must be entered once to enable local access. |
✓ Works without a subscription: Yes.
Vendor account required: Optional — there is a documented way to use it without one.[14][21][29][48]
On Apple Home via Matter: No — no vendor account is involved.[48]
No subscription tier is attached to this switch: TP-Link's product page and datasheet name no plan and no fee, and describe schedules and remote control as features of the Kasa Smart app.
A fit for single-pole locations in homes that want one dimmer visible to Alexa, Google, SmartThings, Apple Home (via Matter), and Home Assistant without a hub, on a 2.4 GHz network with a neutral wire in the box.
This opens TP-Link (Kasa)'s own website. We earn nothing from this link.
Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →
Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.
Your platform, exact hub and the functions you need determine the answer. A Setup Check researches how they fit together.