Discontinued

Leviton Decora Smart Wi-Fi Dimmer, 2nd Gen (D26HD)

Compiled by SmartHomeWorkflow Research · Leviton · Switches & Dimmers

The switch is discontinued, and it still works: Leviton replaced it with the D36HD, while the app, the cloud service and the Matter firmware path all keep running. A product can be off the shelves and fully supported at the same time, which is exactly this case. Discontinued in favor of the D36HD, and Matter is not out of the box: it arrives via an opt-in Early Access firmware update through the My Leviton app, and applying it breaks an existing Apple HomeKit pairing until the device is re-added over Matter.

Exactly which product this is^[5]

Model number: D26HD-1BW
Generation: Not established
Region this page covers: Not established
Also sold or listed as: Not established
Replaced by: D36HD-1BW

“Not established” means we have not sourced that detail yet — not that the product has no model number, generation or regional variant. We publish the gap rather than filling it.

Compatibility

Ecosystem	Support	The catch
Amazon Alexa	WorksWorks with this ecosystem^[2][5]	Cloud skill via My Leviton account; Leviton states existing cloud integrations are not impacted by the Matter update, so both paths can coexist.
Google Home	WorksWorks with this ecosystem^[2][5]	Cloud integration via My Leviton account; Matter is an alternative path.
Apple Home	WorksWorks with this ecosystem^[2][5]	Native HomeKit on stock firmware. Installing the Matter firmware removes the existing HomeKit connection; the dimmer must be re-added to Apple Home with its Matter pairing code from the My Leviton app.
SmartThings	WorksWorks with this ecosystem^[2][5]	Listed by Leviton among supported ecosystems; cloud-linked, with Matter as an alternative path.
Home Assistant	PartialPartial support — see the catch^[2][4]	No official Leviton integration. The community decora_wifi integration is cloud-polling, flagged legacy, and does not list the D26HD. The documented route is the Matter firmware plus Home Assistant's Matter integration.In Home Assistant you also need: Home Assistant's own Matter Server app, installed from inside Home Assistant (no extra hardware to buy) — Home Assistant’s rule for every Matter accessory. Source (read 2026-09-11)

Protocols: WIFI · MATTER^[1][2][3][9]

What it can do^[8]

You can tell it to

On/off
Brightness

It reports

Not established — we could not confirm this from vendor documentation

Whether each platform's automations and routines can use it — not just whether its app shows it.

What it does	Apple Home	Google Home	Alexa	SmartThings	Home Assistant
On/off	✓ routines can use it	✓ routines can use it	? not stated	✓ routines can use it	✓ routines can use it
Brightness	✓ routines can use it	✓ routines can use it	✓ routines can use it	✓ routines can use it	✓ routines can use it

Platform documentation: Amazon Alexa — automation engine ceiling (eight terms observed; residue inconclusive by refusal) (2026-09-01), Apple Home — automation engine ceiling (2026-09-01), Google Home — automation engine ceiling (2026-09-01), Home Assistant — automation engine ceiling (2026-08-29), SmartThings — automation engine ceiling (2026-09-01)

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

Subscription reality^[5]

✓ Works without a subscription: Yes.

Vendor account required: Not established — we have not sourced this yet.

My Leviton app, schedules, scenes, and remote access are free; no subscription tier documented on Leviton's product or support pages.

Maintenance reality^[5]

Works without the internet: Inconclusive — we read the vendor's own material and it does not answer this either way. It does not mean the product fails without the internet.
Neutral wire required (stated in Leviton's own product title). 2.4 GHz WiFi only. Loads: 300 W dimmable LED/CFL, 600 W incandescent/halogen, 600 VA magnetic low voltage (the MLV rating re-read from Leviton's page 2026-08-10). Multi-location control only via Leviton companions (DD00R wired or DAWDC Anywhere wire-free), not standard 3-way wiring. My Leviton app + account handle setup, firmware, and the cloud voice-assistant links; native HomeKit and Matter control are local. The Matter path requires opting into Leviton's Matter Early Access Program in the app: firmware 1.4.8+ first, then Matter firmware 2.1.0 or later.
Security updates: No security-update support date is on record for this model yet. We haven't yet checked whether Leviton publishes one, so this is a gap in our research — not a statement about the manufacturer.

Who it's for

A fit for households with a neutral wire that want a 600 W-incandescent/300 W-LED dimmer working across Alexa, Google, SmartThings, and Apple Home, and are comfortable managing firmware on a discontinued-but-supported model; buyers starting fresh may prefer its D36HD successor.

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 →

Where these facts come from

No mark: Everything on this page without a mark comes from the people answerable for it: the manufacturer, the platform's own documentation, or a certification register. That is the standard we hold ourselves to.
Seller's spec sheet: This fact comes from a retailer's or a reviewer's specification listing instead of from the manufacturer. A few compatibility answers still rest on one, and we are replacing those with the maker's own word as we find it. The date is when we last checked, because these listings change without notice.
Someone's observation: This fact comes from an owner, a forum, or a community project — someone with the product in front of them rather than the company that makes it. Worth knowing, and not the same as the maker saying so.

Below is every source behind the facts on this page, numbered so you can trace any one of them. Each is quoted in the source's own words, with the date we last read it — we keep the wording exact rather than tidying it, so you can check what was actually said.

14 numbered sources· read them in the source's own words

[1] leviton.com/products/d26hd-1bw — Read on the maker's own site, verified 2026-07-17
Backs: Protocols, Market availability
[2] leviton.com support: 'Decora Smart Wi-Fi 2nd Gen Matter Support' + 'How do I Update my Decora Smart Wi-Fi 2nd Gen Device to Support Matter?' + Leviton press release 2023-07-18 — Read published press coverage, verified 2026-07-17
Backs: Amazon Alexa compatibility, Google Home compatibility, Apple Home compatibility, SmartThings compatibility, Home Assistant compatibility, Protocols
[3] csa-iot.org/csa_product/d26hd/ — D26HD, Leviton Manufacturing Company, certified 2025-02-21, cert ID CSA250F5MAT45127-24, fw 2.3.10, WiFi+Bluetooth transport — Checked a certification register, verified 2026-07-17
Backs: Protocols
[4] home-assistant.io/integrations/decora_wifi/ — community maintained, cloud polling, legacy flag, D26HD absent from supported-model list — Read on the maker's own site, verified 2026-07-17
Backs: Home Assistant compatibility
[5] leviton.com/products/d26hd-1bw, read 2026-08-10 — 'Decora Smart Dimmer Switch, Wi-Fi, Neutral Wire Required', model D26HD-1BW; status DISCONTINUED with suggested replacement D36HD-1BW; NO price or MSRP published; neutral wire required; dimmable LED/CFL 300 W, incandescent/halogen 600 W, magnetic low voltage 600 VA; Matter available via firmware update through the My Leviton app (opt-in); ecosystem support listed as Amazon Alexa, Google Assistant, Apple Home/Siri, SmartThings, Sonos, Resideo — Read on the maker's own site, verified 2026-08-10
Backs: Product identity, Market availability, Service status, Research status, Maintenance, Price, Subscription, Amazon Alexa compatibility, Apple Home compatibility, Google Home compatibility, SmartThings compatibility
[6] leviton.com Decora Smart Wi-Fi support hub, its 2nd-Gen Matter-support and 1st-vs-2nd-gen articles, and the cited home-assistant.io decora_wifi integration, all re-read 2026-08-18 — Read on the maker's own site, verified 2026-08-18
[7] Two Leviton first-party surfaces, both read 2026-08-20. The product page (leviton.com/products/d26hd-1bw) states the negative twice — "No hub required with My Leviton app" and "Connects to Wi-Fi; No hub required" — with "Requires 2.4 GHz Wi-Fi Network". Leviton's Decora Smart Wi-Fi 2nd Gen Matter support article then supplies the other half: devices are enrolled "to a Matter enabled hub", and "Depending on your smart home platform of choice, this could be a supported Google Nest, Amazon Echo, Apple HomePod, or SmartThings device for example"; for Apple, "Controlling Matter accessories with the Apple Home App and Siri requires an Apple Home hub such as a HomePod or Apple TV running the latest software." — Read on the maker's own site, verified 2026-08-20
Backs: Required hub or bridge
[8] leviton.com/products/d26hd-1bw, read 2026-08-20, which describes the dimming in unusual detail: "full range dimming performance"; "double press the top rocker to quickly snap on at maximum brightness; or double-press bottom rocker to snap OFF"; "customizable fade rates that gradually turn lighting on or off, or preset light level options"; and "Schedule lights and connected loads to dim/brighten or turn ON/OFF at specific times or based on sunrise/sunset". Control is "from anywhere" in the My Leviton app, and it "Works with Alexa, Google Assistant, Apple Home, SmartThings, Sonos, Resideo, and Matter". — Read on the maker's own site, verified 2026-08-20
Backs: Capabilities
[9] This record's existing per-model Matter evidence, re-read 2026-08-20 against our settled definition of which radios count as the device's own: certificate CSA250F5MAT45127. No outside page was read for this entry — the evidence already on this record was re-examined and this entry states what it establishes., verified 2026-08-20
Backs: Protocols
[10] https://www.leviton.com/products/d26hd-1bw (read 2026-09-09), TECH SPECS: 'Requires Neutral Wire', 'Rated for 120V, 60Hz: Dimmable LED and CFL up to 300W, Incandescent up to 600W, and Magnetic Low Voltage up to 600VA'. A 120 V in-wall dimmer with a required neutral is hardwired, taken from the wiring spec rather than from the device class. — Read on the maker's own site, verified 2026-09-09
Backs: Power source
[11] https://www.leviton.com/support/resources/mobile-apps (read 2026-09-09): 'A series of FREE Leviton Apps are available - downloadable via the Apple App Store and Google Play', with My Leviton listed among them — the app the product page names ('No hub required with My Leviton app'). ⊖ The instrument is weaker than the direct pair used on the ecobee and Cync records: this is a family-level statement about Leviton's apps, not a My Leviton store link on either store, which that page does not carry. Recorded as such rather than implied to be the same. — Read on the maker's own site, verified 2026-09-09
Backs: App platforms
[12] https://www.leviton.com/products/d26hd-1bw (read 2026-09-09) says 'Requires 2.4 GHz Wi-Fi Network' in TECH SPECS and '2.4 GHz network compatible' in the marketing copy. Neither enumerates the radio's bands, and neither says 5 GHz is unsupported — our standing bar for the Wi-Fi band is explicit that a 'connect to a 2.4 GHz network' instruction is a setup statement and does not establish a limit. Compare the Nanoleaf records in this same batch, whose spec tables print '5 GHz not supported' and therefore do fill. The Wi-Fi band stays unanswered: checked and not published, not never-looked-at. — Read on the maker's own site, verified 2026-09-09
[13] the record's own customer-facing prose fields as they stood before 2026-09-12 (no new external read), verified 2026-09-12
[14] Our own service-status note for this record, as it read before 2026-09-15: First time this axis has been stamped — it had been unanswered, with no date, since the record was written. ⚠ Note the axes disagree ON PURPOSE and that is the point of splitting them: the product is no longer sold (discontinued, superseded by the D36HD) while the service behind it is running in full (the app, the cloud and the Matter firmware path all still work). A discontinued product that still functions is exactly the case a single lifecycle field could not express., verified 2026-09-15

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.

Check it against YOUR setup →