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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.

Compatibility

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

What it can do^[10]

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

Subscription reality^[2][18]

✓ 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]

• 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.^[13]
• Neutral wire required — the instruction sheet carries it as its own note, 'NOTE: This product requires a Neutral wire', and then explains how to spot one in your wallbox. Ratings: 15A 120VAC 60Hz general use, 3A LED/CFL, 1/3 HP motor. Environment: 32°F to 104°F (0°C to 40°C), 10% - 90% non-condensing. Network: 802.11 b/g/n, 2.4 GHz only, WPA/WPA2/WPA3 or open; Bluetooth v5.0. Multi-location control needs companions sold separately — wired DD0SR-DLZ (up to 4) or DD0SR-01Z (up to 9) over a yellow/red traveler, max 300 ft (90 m); or up to 3 wire-free DAWSC Anywhere Switch Companions. Vendor cautions carried verbatim because they are the ones that bite: 'Do not use your switch with aluminum wire', 'Installation in metal wall boxes or with metal wall plates may result in poor RF performance', and indoor use only. Onboard memory keeps configuration and schedules and restores the last state after a power outage. Limited 1 year warranty. Installation 'requires electrical knowledge. If you are unsure of any steps, consult an electrician.'
• 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.

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 and SmartThings owners now have a documented setup route from Leviton itself — account linking for the first two, Matter for SmartThings — so this is no longer a switch you have to research your way into. Two caveats remain. None of the three is confirmed from the platform's own side, and the SmartThings route needs a Matter-capable SmartThings hub, with no account-linking alternative offered. Home Assistant is the one of the four where Leviton still claims support and documents nothing at all.

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 →

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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