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Leviton D315S-1RW Decora Smart Switch: Matter Support, No Hub Required

The Leviton D315S-1RW is a Wi-Fi smart switch built for households that want one lighting standard to rule them all: Matter, My Leviton, Alexa, Google Assistant, and Apple Home/Siri all work here. It suits anyone wiring a 3-way circuit who refuses to buy a hub just to dim a hallway light. This review covers what the switch does, how it is built, where the installation gets fussy, and who should skip it.

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Features and Specifications

Brand: Leviton
Model: D315S-1RW
Color: White
Protocol: Wi-Fi
Smart Home Platforms: Matter, My Leviton, Alexa, Google Assistant, Apple Home/Siri
3-Way Support: Wired or wire-free
Neutral Wire: Required
Form Factor: Decora

The headline here is platform breadth. Matter support means the switch can join a local smart home controller and stay useful even if a cloud service changes its terms, while the native My Leviton app and the three major voice ecosystems cover the households that never set up a hub at all. Wi-Fi is built in, so there is no bridge or dongle in the box.

The neutral wire requirement is the specification that decides more installs than any other. Older homes and some switch loops simply do not have a neutral conductor in the box, and this switch will not work without one. Buyers should pull the wall plate and check before ordering.

Build and Installation

The D315S-1RW is a Decora-format switch, which means it fits standard Decora wall plates and matches the look of the paddle switches that have replaced toggle switches in most remodels. The white finish is the default, and the form factor keeps a whole bank of switches visually consistent.

Installation is a line-voltage job: the switch splices into the existing wiring, needs the neutral connection described above, and then joins the home Wi-Fi network through the My Leviton app. Buyers comfortable replacing a switch themselves will find the process familiar; anyone who has never worked inside a switch box should budget for an electrician.

Trade-off: The neutral wire requirement rules out a meaningful share of older homes, and there is no battery-powered fallback for a box that lacks one.

3-Way Flexibility

The "wired or wire-free" 3-way support is the feature that separates this switch from most of the Wi-Fi competition. In a wired setup, the switch works with a companion device on the second leg of the circuit. In a wire-free setup, the second control point does not need a traveler wire run between the two locations.

That matters in finished rooms. Running new cable through plaster or behind cabinetry is the expensive part of adding a second switch point, and a wire-free companion removes that cost. Buyers planning a two-switch staircase or a room with doors on opposite walls get the most from this design.

Smart Home and App Control

Matter is the reason to pick this model over an older Wi-Fi switch. Once paired through Matter, the switch can be controlled from Apple Home, Google Home, Alexa, or a local hub, and it keeps working across ecosystems rather than locking into one vendor’s app.

The My Leviton app handles setup, scheduling, and firmware updates, and it is the required first step before the switch is exposed to the other platforms. Voice control through all three major assistants is native, so a household split between Siri users and Alexa users does not have to choose.

Trade-off: Buyers who want dimming should look at a dimmer model instead, because this is a switch and on/off control is the whole job.

Who It Suits and Who It Does Not

This switch suits homeowners with a neutral wire in the box who want one lighting device that works with Matter and all three voice assistants, and who have a 3-way circuit that would be expensive to wire conventionally. It also suits anyone standardizing on Decora plates across a room.

It does not suit homes without a neutral conductor, buyers who need dimming, or anyone hoping for a battery-powered or hub-free install in a box with only two wires. Those shoppers should look at a no-neutral smart switch or a smart bulb instead.

FAQ

Does the Leviton D315S-1RW need a neutral wire?
Yes. The product name states neutral wire required, so the switch box must have a neutral conductor for the device to power on.
Does this switch work with Apple HomeKit?
It works with Apple Home/Siri through Matter. Pairing goes through the My Leviton app first, then the switch is exposed to Apple Home.
Can the D315S-1RW be used in a 3-way circuit?
Yes. It supports both wired and wire-free 3-way setups, so a second control point can be added without running a traveler wire.
Is a hub required?
No hub is required for basic Wi-Fi control through the My Leviton app or for voice control through Alexa, Google Assistant, or Siri.
Does this model dim lights?
No. The D315S-1RW is a switch, not a dimmer. Buyers who want brightness control need a dimmer version of the Decora Smart line.
What color is the switch?
White. It is a Decora form factor, so it fits standard Decora wall plates.
Will it work with Google Assistant and Alexa at the same time?
Yes. Matter support allows the switch to be shared across ecosystems, so a household can mix voice assistants.
Can it be installed without an electrician?
It is a line-voltage install. Buyers experienced with switch replacement can handle it, but anyone unfamiliar with household wiring should hire an electrician.
Does it need Wi-Fi to work?
Yes. The switch connects over Wi-Fi, and the initial setup runs through the My Leviton app.
Is the wall plate included?
The switch is sold as the device itself in white; buyers should confirm plate inclusion on the listing before ordering.