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Kasa KS225 vs Inovelli White: Wi-Fi or Thread Matter Dimmer

Kasa KS225 (Wi-Fi) vs Inovelli White VTM31-SN (Thread) Matter dimmers: neutral wire, multi-way, load limits, packs, CSA certificates and stores compared.

A Wi-Fi dimmer that needs a neutral wire versus a Thread dimmer with multi-way and non-neutral options

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Quick verdict

Both are Matter wall dimmers with a CSA certificate on file. The Kasa KS225 joins Wi-Fi, is single-pole only and needs a neutral wire; the Inovelli White VTM31-SN joins Thread and supports multi-way and, with checks and a bypass, non-neutral setups. The KS225 offer we link is a three-pack.

Which one for your home

  • Your wall box has no neutral wire: Inovelli White VTM31-SN

    Inovelli supports non-neutral installations with configuration checks and a bypass; TP-Link says the KS225 requires a neutral wire.

  • One light is controlled from two or more switches: Inovelli White VTM31-SN

    The Inovelli White supports single-pole or supported multi-way setups; the KS225 is single-pole only and not a 3-way dimmer.

  • Your home has no Thread border router: Kasa KS225

    The KS225 joins 2.4 GHz Wi-Fi; the Inovelli White joins Thread and needs a Thread border router.

  • You are fitting several rooms: Kasa KS225

    The KS225 offer we link is a three-pack (KS225P3).

Side by side

The first rows repeat each product page, read from its catalog record. The rest quote the maker or the record, with the source linked in each cell. Prices load in your browser only when a store price was checked in the last 48 hours or an Amazon price was retrieved in the last 24 hours.

WhatKasa KS225Inovelli White VTM31-SN
Current price
See price at Amazon
See price at Amazon
CSA Matter certificateCSA23100MAT40613-24 (Jan 6, 2023)CSA26033MAT49519-24 (Jan 15, 2026)
Matter network (its record)Wi-FiThread
Needs a Thread border router?No; it joins your Wi-FiYes, plus a Matter controller
Platforms the maker namesApple Home, Amazon Alexa, Samsung SmartThingsNone on file; confirm with the maker
Stores we linkAmazonAmazon, Inovelli
WiringSingle-pole only; neutral required. SourceSingle-pole or supported multi-way. Source
Without a neutral wireNot an option: TP-Link says it requires a neutral wire. Its catalog recordNeeds configuration checks and a bypass; non-neutral multi-way needs an Inovelli Aux switch. Source
LoadTRIAC-dimmable bulbs: up to 150 W LED or 300 W incandescent/halogen. SourceSupported lighting loads only: not fans, outlets, motors or transformer-fed loads. Its catalog record
Pack we linkThree-pack (KS225P3) on Amazon. SourceOne switch on Amazon. Source

Which to choose when

Choose Kasa KS225 when…

Choose the Kasa KS225 when your box has a neutral wire, the light is on one switch and you have no Thread border router: it joins 2.4 GHz Wi-Fi with Bluetooth for setup and dims TRIAC-dimmable bulbs up to 150 W LED. The offer we link is a three-pack (KS225P3); CSA certificate CSA23100MAT40613-24 (January 2023).

Choose Inovelli White VTM31-SN when…

Choose the Inovelli White VTM31-SN when you need multi-way or a non-neutral setup, which Inovelli supports with checks and a bypass, and you have a Thread border router. It joins Matter over Thread, has an LED notification bar and carries CSA certificate CSA26033MAT49519-24 (January 2026).

What the catalog records show

The same answers each product page gives, from its catalog record and verified store links; a platform is named as confirmed only where the maker’s own site names it.

Kasa KS225 (KS225P3, 3-pack)

Is this switch Matter certified?
Yes. CSA Matter certificate CSA23100MAT40613-24 covers model KS225 with software 1.0.0. The certificate does not establish the firmware on a unit you buy.
Which smart home platforms does this switch work with?
The maker’s own site names Apple Home, Amazon Alexa and Samsung SmartThings. Unverified: its catalog record also lists Google Home, with no maker quote on file; check exact controller support. Controls can differ from app to app.
Does this switch use Thread or Wi-Fi?
Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
Where can I buy this switch?
MatterCatalog has verified store links for it at Amazon. Check the current price, model and pack size at the store.
What the maker says you need
Single-pole only · neutral required. Compatible TRIAC-dimmable bulbs: up to 150 W LED or 300 W incandescent/halogen. Check the bulb and dimmer specifications together. A 2.4 GHz Wi-Fi network and your platform’s Matter setup requirements. Bluetooth is for setup.
Model and package
120 V AC · 60 Hz. Amazon: KS225P3 · 3-pack. US retailer listing; confirm regional installation requirements.

Inovelli White VTM31-SN

Is the Inovelli White VTM31-SN Matter certified?
Yes. CSA Matter certificate CSA26033MAT49519-24 covers model VTM31-SN with software 1.1.5. The certificate does not establish the firmware on a unit you buy.
Does the Inovelli White VTM31-SN use Thread or Wi-Fi?
Thread. Its catalog record lists Thread, and Matter devices that use Thread need a Thread border router in the home, in addition to your platform’s Matter controller.
Where can I buy the Inovelli White VTM31-SN?
MatterCatalog has verified store links for it at Amazon and Inovelli. Check the current price, model and pack size at the store.
What the maker says you need
Single-pole or supported multi-way. A compatible Matter controller and Thread border router. Advanced scenes and notifications depend on the platform. Non-neutral installations need configuration-specific checks. Budget for a bypass; non-neutral multi-way needs an Inovelli Aux switch. Confirm the current manual before purchase.
Model and package
120 V AC · 60 Hz. Amazon: VTM31-SN · 1 switch. US retailer listing; confirm regional installation requirements.
Which platforms does its record list?
None yet. MatterCatalog has not recorded platform support for this record, so confirm your platform with the maker.

What they share

  • Both have a CSA Matter certificate on file.
  • Both have US store links on their product pages.

Product, category and brand pages

Best Matter Smart Switches 2026 →

Before you buy

  • Neutral: the KS225 needs one; Inovelli’s non-neutral setups need configuration checks and a bypass.
  • Load: check bulb compatibility and limits. The KS225 lists up to 150 W LED or 300 W incandescent/halogen; the VTM31-SN is for supported lighting loads only.
  • Network: the KS225 joins 2.4 GHz Wi-Fi; the Inovelli needs a Thread border router and a Matter controller.
  • Multi-gang: Inovelli notes multi-gang derating; check the manual before you install.

Common questions

Does the Kasa KS225 work without a neutral wire?
No. TP-Link says it requires a neutral wire, and it is single-pole only. The Inovelli White VTM31-SN supports non-neutral setups with configuration checks and a bypass.
Is the Inovelli White Matter over Thread?
Yes. White is Inovelli’s Matter-over-Thread series (Blue is Zigbee), so it needs a Thread border router and a Matter controller.
Which dimmer works in a 3-way setup?
Inovelli supports single-pole or supported multi-way installations; non-neutral multi-way needs an Inovelli Aux switch. The Kasa KS225 is single-pole only and not a 3-way dimmer.

How this page was made

We have not performed hands-on testing. This page is built from MatterCatalog’s catalog records: each product’s CSA certificate and its scope, the network and platforms its record lists, the maker’s setup requirements and the stores with a verified link. It does not rank performance, reliability or price; check the current price, model and pack size at the store. Editorial policy

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