Product Library / Switches & Dimmers

TP-Link Kasa Smart Ceiling Fan Control and Dimmer Switch (KS240)

Compiled by SmartHomeWorkflow Research · TP-Link (Kasa) · Switches & Dimmers

Compatibility

? Inconclusive means we researched that ecosystem and the evidence doesn’t settle it — the catch says why, and the sources are listed below. It is a statement about the available evidence, never a verdict on the product. A Setup Check researches your exact setup where the official sources don’t answer.

Protocols: WIFI^[1]

Needs before it works: No hub, and TP-Link names none anywhere on the page — this is a Wi-Fi switch that talks to your router directly. What it does require is wiring, and one requirement is absolute and stated twice: 'Neutral Wire Required: Yes', with the installation note 'Neutral wire is required. Connect wires to the smart switch as below.' That is the single fact that decides whether you can buy this, and it is decided by your house rather than by you — older US switch boxes frequently have no neutral, and no setting or adapter works around it. Check the box before ordering. The switch replaces a combined fan-and-light wall control, so it is a two-load device in one gang: it sets fan speed and dims the light from the same faceplate.^[1]

What it can do^[1]

Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.

Subscription reality^[1][2]

✓ Works without a subscription: Yes.

Vendor account required: Optional — there is a documented way to use it without one.^[5]

No subscription, plan, tier or fee appears anywhere on the product page. Recorded 'none' on that basis — an absence of fee language rather than a vendor promise. The Home Assistant route reinforces it from the other side: that integration is local polling, so the switch can be driven with no TP-Link service in the path at all.

Maintenance reality^[1]

• Works without the internet: Partly — some of it keeps working and some of it does not. See the detail below.^[2]
• A hardwired in-wall switch, so there is nothing to recharge or replace. Wireless specification as published: IEEE 802.11b/g/n on 2.4 GHz, plus Bluetooth listed explicitly as 'Bluetooth (setup only)'. That parenthetical is the reason Bluetooth is excluded from the protocols field — this catalogue lists usable control paths rather than radios present, and TP-Link has done the unusual and helpful thing of saying outright which of the two Bluetooth is. cloudDependent is recorded true because the app and both voice assistants run through TP-Link's service; note that this is the default path rather than the only one, since Home Assistant's integration reaches the switch locally.
• Security updates: TP-Link (Kasa) states its security-update commitment for this model as a period rather than a date: ends 3 years after the product's end-of-life date — and TP-Link's published end-of-life list covers Home and Business Networking only, so no end-of-life date exists for this smart-home model and no clock has started (UK-declared — the maker's legal commitment is filed for the United Kingdom). That is a floor measured from a starting point the manufacturer sets — a launch or a purchase — rather than a fixed end date, so it cannot be placed on a calendar here. We record the commitment as the manufacturer states it, in our words, rather than converting it into a date it did not give. This is a published commitment, not a gap in our research.^[4]

The catch

The first thing to check is not a feature, it is your wall. 'Neutral Wire Required: Yes' — stated plainly by TP-Link and repeated in the installation instructions — and that requirement is settled by the age of your house rather than by anything you can configure. Plenty of US switch boxes, especially in older homes, have no neutral, and there is no adapter or setting that works around it. Open the box and look before you order. Second, what this switch is for: it is a combined fan-and-light control replacing a single wall plate, setting fan speed and dimming the light from one gang. That is the reason to choose it over a plain fan controller, and it is also why the undocumented voice depth below matters more here than it would on a simpler device. Third, the Apple question, which this product gets RIGHT in a way worth calling out: TP-Link says you 'manage your connected fans and lights using the Apple Home App or with voice commands by asking Siri'. That is a device in Apple Home, not a Siri phrase — a genuine tile you can automate and share, and a different thing from the Shortcuts-only arrangements some vendors describe with similar-sounding words. What TP-Link does not say is whether that runs over HomeKit or Matter; Matter is named nowhere on the page. Fourth, the gap: TP-Link publishes no command set for Alexa or Google. On a two-load switch that is a real unknown — whether you can say a fan speed rather than just 'on', and whether the light's brightness is voice-addressable, are not documented anywhere on the page. Fifth, and this is the pleasant surprise TP-Link never mentions: Home Assistant's official integration names KS240 by model in its supported list and drives it over the local network, so a self-hosting household gets local control without TP-Link's cloud — with the footnoted catch that this model requires authentication at setup. Finally, on price: TP-Link publishes none on its own page, only a button that hands you to a retailer.

Who it's for

The household with a ceiling fan and light on one wall switch, a confirmed neutral wire in the box, and a willingness to do a straightforward but real wiring job. It suits an Apple Home household particularly well, because the Apple support here is the genuine article — a device in the Home app rather than a Siri shortcut — and that is scarcer in this subcategory than the marketing across the category suggests. It is equally strong for a Home Assistant user, where the official integration names this exact model and controls it locally. Alexa and Google households are well served too, with the honest caveat that TP-Link documents no voice command set, so how precisely you can set a fan speed by voice is something you will discover rather than read. Think twice if your switch box has no neutral wire, which rules the product out entirely; if you need SmartThings, where neither side has said anything; or if you want the manufacturer's price before you shop, since TP-Link publishes none.

Sources & method

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 →

1. [1] TP-Link, Kasa KS240 product page (US) — vendor-page research, verified 2026-08-05
   Backs: Product identity, Price, Protocols, Power source, Installation, Required hub or bridge, Maintenance, Capabilities, Subscription, Market availability, Apple Home compatibility, Amazon Alexa compatibility, Google Home compatibility, Research status, SmartThings compatibility
2. [2] Home Assistant, TP-Link Smart Home integration documentation — counterparty documentation, verified 2026-08-05
   Backs: Home Assistant compatibility, Subscription, Works without the internet
3. [3] TP-Link, IFTTT Services Ending for Tapo & Kasa Products (FAQ 5154) — vendor-page research, verified 2026-08-11
   Backs: Service status
4. [4] TP-LINK SYSTEMS INC., "PSTI STATEMENT OF COMPLIANCE" (static.tp-link.com, document dated 2026-03-18), read in full 2026-08-20 — a signed regulatory declaration under Schedule 1 of the UK PSTI Regulations 2023, covering "the TP-Link brand and its subsidiaries". Its support-period rule is stated verbatim: "TP-Link will provide security updates for our products during the pre-defined support period. The defined support period will end 3 years after the product's end-of-life date." The document then carries a per-model table — Product/Model Name, Model Number, Defined Support Period — with real dates (e.g. "20/2/2029", "11/7/2027", "31/12/2029 or later*") given SEPARATELY FOR EACH HARDWARE VERSION. TP-Link's own end-of-life FAQ (tp-link.com/uk/support/faq/3562/), read the same day, defines EOL as production having "ended on the model or the specific version of the model" and lists Home Networking and Business Networking products only — no Kasa or Tapo smart-home models appear in it. The Kasa KS240 appears nowhere in the table. — first-party regulatory declaration read (BQ-192 security-support sweep, method note 69 precedence) — PDF read page by page, verified 2026-08-20
   Backs: Security-update support period
5. [5] KS240(US)1.0 official datasheet (static.tp-link.com, from TP-Link's own KS240 support-download page), 'HomeKit Supported' feature block, read 2026-08-21; the setup procedure itself from the HomeKit card TP-Link publishes on that same download page (tp-link.com/us/document/127542/) — vendor-page research, verified 2026-08-21
   Backs: Vendor account required
6. [6] SmartHomeWorkflow record maintenance (BQ-244 absence-marker blast-radius repair) — internal-review, verified 2026-08-27
7. [7] SmartHomeWorkflow record maintenance (BQ-250 securitySupport.region backfill) — internal-review of the document this record already cites, verified 2026-08-27
8. [8] Record-keeping entry: the migrated research stamp was replaced by the read that actually established this record, 2026-08-30 — internal, verified 2026-08-30

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.

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