Product Library / Switches & Dimmers

Research profile · last verified 2026-08-28

Leviton Decora Smart Wi-Fi Switch, 15A (D315S)

Compiled by SmartHomeWorkflow Research · Leviton · Switches & Dimmers

⚠ Similar names, different products: Leviton's D315S and D215S are different products despite near-identical names and near-identical listings. This page covers the D315S. Leviton publishes no '3rd Gen' label, so a listing that only says 'Decora Smart Wi-Fi switch' does not tell you which one you are buying.

Exactly which product this is[6]

Model number
D315S
Generation
Not established
Region this page covers
Not established
Also sold or listed as
D315S-1BW · D315S-1RW

“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

EcosystemSupportThe catch
Amazon AlexaPartialPartial support — see the catch[2]Leviton names Alexa in its own installation instructions, so the claim is the maker's and not just marketing, but no mechanism is documented for this model. Two routes are plausible and the sources do not choose: Matter (the switch is Matter-certified and the instructions' only controller step is 'Connect to a Matter controller'), or a My Leviton cloud account link, which is how the earlier generation reached Alexa. We did not assume the earlier behaviour, because Leviton's own generations page does not list this switch among those models. Recorded as partial because the route is undocumented.
Google HomePartialPartial support — see the catch[2]Same standing as Alexa: named in Leviton's installation instructions with no mechanism documented for this model, and two plausible paths (Matter, or a My Leviton cloud link as on the 2nd-Gen line). Not inferred from the sibling generation.
Apple HomeWorksWorks with this ecosystem[2][5]Coded differently from Alexa/Google deliberately, and the asymmetry is reasoned rather than arbitrary: Apple Home speaks only HomeKit or Matter, and Leviton documents NO native-HomeKit path for this model — unlike the 2nd-Gen line, which advertised HomeKit prominently. The instruction sheet carries no HomeKit branding at all and its single controller step is 'Connect to a Matter controller (optional)', while the product page says 'Matter ready out of the box'. Matter is therefore the only remaining path, not a guess. Full because on/off is this device's entire function and its certified Matter device type is On/Off Light (0x0100). Platform requirement, not a D315S spec: Leviton states that controlling Matter accessories from the Apple Home app and Siri 'requires an Apple Home hub such as a HomePod or Apple TV running the latest software', and that the Matter pairing code lives in the My Leviton app under Device Settings.
SmartThingsPartialPartial support — see the catch[2][3]Named in Leviton's installation instructions, with no mechanism documented for this model: advertised but undocumented, so recorded as partial.
Home AssistantPartialPartial support — see the catch[3]Worth a note because makers rarely do this: Leviton lists Home Assistant by name on the product page ('Works with Matter, Amazon Alexa, Google Home, Apple Home, Smart Things, Home Assistant, Sonos, Resideo and more'). But it is the weakest of the five claims on this record: Home Assistant appears only on that marketing page and is absent from the installation instructions' own list, and no mechanism is documented. Home Assistant's existing community Leviton integration works through Leviton's cloud, is flagged as legacy, and predates this model entirely, so it cannot be assumed to cover it. Matter is the plausible route but is not stated for this pairing.

Protocols: WIFI · MATTER · BLUETOOTH[1][2][4][11]

What it can do[10]

You can tell it to

  • On/off

It reports

Not established — we could not confirm this from vendor documentation

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

Subscription reality[2]

✓ Works without a subscription: Yes.

Vendor account required: Optional — there is a documented way to use it without one.[12]

No subscription, paid tier or premium feature is mentioned anywhere in Leviton's specification page or installation instructions, including the sections on scheduling, auto-shutoff and remote control, which are the features a maker would normally gate. Recorded as none on that basis; note this rests on the absence of any paywall language in two Leviton documents rather than an explicit 'no subscription' statement.

Maintenance reality[2]

The catch

Matter works out of the box here — which is the whole point of the model, and the opposite of the Decora Smart Wi-Fi 2nd Gen line, where Matter arrived only through an opt-in Early Access firmware update that broke an existing HomeKit pairing. The trade is that Leviton has stopped documenting a native HomeKit path, so Apple Home households now need a HomePod or Apple TV acting as a Matter controller rather than pairing the switch directly. It also needs a neutral wire, runs on 2.4 GHz Wi-Fi only, and every multi-location setup costs extra: 3-way control requires a separate companion switch (wired DD0SR or wire-free DAWSC), because a second ordinary switch will not do. One naming trap worth knowing before you shop: this is NOT the 2nd Gen switch. Leviton's own generations page names the 2nd Gen line as 'the D26HD Dimmer, D215S Switch, D23LP Mini Plug-in Dimmer and D215P Mini Plug-in Switch' — D315S is not among them, and the Matter registry files it under family SKU D36HD, the model Leviton lists as the D26HD's replacement. Leviton publishes no '3rd Gen' label for it, so this record does not invent one; treat D315S and D215S as different products despite the near-identical names.

Who it's for

A fit for a household that has a neutral wire in the box, wants a plain on/off smart switch that joins Matter without a firmware project, and controls it from Apple Home with a HomePod or Apple TV already in place. It suits loads beyond lighting too — Leviton rates it for ceiling and exhaust fans, motors and pumps up to 15A and 1/3 HP. Look elsewhere if you have no neutral wire, if your network is 5 GHz-only, or if you want three-way control without buying a matching companion switch. Alexa, Google Home, SmartThings and Home Assistant owners should know that Leviton asserts support for all four but documents how for none of them, so budget for some setup research.

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] Leviton D315S mobile instruction sheet d315s-mobile-instruction-sheet-enfrsp.pdf (leviton.com, fetched and text-extracted 2026-08-09 — this closes the tranche-4 note that the D315S sheet's text layer would not extract): NETWORK table 'Wi-Fi® | 802.11 b/g/n networks - 2.4 GHz only · Security | WPA, WPA2, or WPA3 security, or open · Bluetooth | v5.0 · My Leviton App | Supports iOS and Android'; section 8 'What you need to make it work — A 2.4 GHz Wi-Fi network with high-speed internet. An iOS or Android mobile device. NOTE: Make sure Wi-Fi and Bluetooth are enabled on your mobile device. A My Leviton account, if connecting using the My Leviton app. A Matter controller or hub, if connecting using Matter.' The French and Spanish sections of the same sheet carry the identical structure. No Leviton document read states what the Bluetooth radio is for. — vendor-documentation research, verified 2026-08-09
    Backs: Protocols
  2. [2] leviton.com/content/dam/leviton/residential/product_documents/instruction_sheet/d315s-mobile-instruction-sheet-enfrsp.pdf — vendor-manual research, verified 2026-07-29
    Backs: Protocols, Required hub or bridge, Maintenance, Subscription, Power source, Installation, App platforms, Amazon Alexa compatibility, Google Home compatibility, Apple Home compatibility, SmartThings compatibility
  3. [3] leviton.com/products/d315s-1bw — vendor-page research, verified 2026-07-29
    Backs: Home Assistant compatibility, SmartThings compatibility, Market availability, Price, Power source
  4. [4] csa-iot.org/csa_product/d315s/ — registry-lookup, verified 2026-08-17
    Backs: Protocols
  5. [5] leviton.com/support/resources/product-support/decora-smart-support/articles/17734341251227-How-Do-I-Add-a-Decora-Smart-Matter-Device-to-the-Apple-Home-App — vendor-page research, verified 2026-07-29
    Backs: Apple Home compatibility
  6. [6] leviton.com/support/resources/product-support/decora-smart-support/decora-smart-wi-fi/leviton-has-released-decora-smart-wi-fi-2nd-gen-switches-and-dimmers-what-is-different-from-leviton-wi-fi-1st-gen-devices — vendor-page research, verified 2026-07-29
    Backs: Product identity
  7. [7] Leviton D315S installation instructions (Cat. No. D315S), re-read and text-extracted in full; leviton.com/products/d315s-1bw and store.leviton.com's structured product payload also read this pass — vendor PDF + structured storefront payload, verified 2026-08-28
    Backs: Research status
  8. [8] leviton.com Decora Smart Wi-Fi support hub and the cited Apple-Home Matter article, CSA listing, product page and instruction-sheet PDF, re-read 2026-08-18 — vendor-page research, verified 2026-08-18
  9. [9] This record's own `hubRequired` field and the provenance entry already claiming it (unnamed entry), re-read 2026-08-19. — structuring pass over an established fact (BQ-191 provider backfill, population (b)), verified 2026-08-19
  10. [10] leviton.com/products/d315s-1bw, read 2026-08-20: an on/off switch that "supports loads up to 15A and 1/3 HP for control of lights, ceiling fans, exhaust fans, motors, pumps, and more", controlled from "the free My Leviton app for iOS and Android" with "Use your voice for control without lifting a finger—works with Google Assistant, Amazon Alexa, and Apple Siri" and "Works with Alexa, Google Assistant, Apple Home, SmartThings, Home Assistant, Sonos, Resideo, and is Matter ready out of the box". App-side features listed separately: scheduling and "create scenes to activate multiple lights at once". — vendor + ecosystem-documentation research (BQ-187 capabilities population), verified 2026-08-20
    Backs: Capabilities
  11. [11] This record's existing per-model Matter evidence, re-read 2026-08-20 against the ruled definition of `protocols`: certificate CSA25943MAT47253. No new external source was fetched — the evidence already on this record was re-examined and this entry states what it establishes. — protocols-definition sweep (BQ-222 batch 2; ruling §1 of docs/decisions/2026-08-20-RULINGS-SITTING.md), verified 2026-08-20
    Backs: Protocols
  12. [12] Leviton D315S installation instructions (Cat. No. D315S, mobile version), §8 'What you need to make it work', §13 'Device setup', §17 'Connect to a Matter controller (optional)', and the ratings/specification block — vendor PDF re-read (text-extracted), verified 2026-08-28
    Backs: Wi-Fi bands it can use, Vendor account required
  13. [13] Leviton D315S installation instructions, §8 'What you need to make it work' and the full setup flow — read for offline behaviour, which is not addressed — vendor PDF re-read (text-extracted), verified 2026-08-28
    Backs: Works without the internet
  14. [14] store.leviton.com structured product payload for the Decora Smart Wi-Fi Switch (D315S-1RW, White) and the Leviton D315S installation instructions, both read 2026-08-28 — structured (.js) storefront payload + vendor PDF re-read, verified 2026-08-28
    Backs: Market availability, Service status
  15. [15] the record's own customer-facing prose fields as they stood before 2026-09-05 (no new external read) — consumer-translation pass (07 §2A.12) — customer-facing prose rewritten to the three-layer rule; NO FIELD VALUE, LEVEL, PATH OR TRANSPORT CHANGED. The research trail that used to sit inside those fields is preserved here verbatim., verified 2026-09-05

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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