Tapo S505D (US): what it works with

TP-Link · model Tapo S505D · For the US and Canada

• Matter Yes, over Wi-Fi
• Apple Home Via Matter
• Google Home Via Matter
• Amazon Alexa Via Matter
• SmartThings Via Matter
• Home Assistant Yes

The Tapo S505D is a Wi-Fi single-pole dimmer switch for US wall boxes. It needs a neutral wire, handles 150 W of dimmable LED or 300 W of incandescent and halogen, and works on 2.4 GHz only. TP-Link calls it Matter-certified, so Apple Home, Google Home, Alexa and SmartThings add it through their Matter controllers with no Tapo hub. Home Assistant's TP-Link integration lists it too.

Checked against 3 sources on Oct 18, 2026

Ecosystem compatibility

“Via Matter” means you add it with that platform's Matter controller instead of a brand skill or app. “Unconfirmed” means we couldn't find an official source either way. How we verify.

Specs that matter for setup

Radio

Wi-Fi, Bluetooth^[1],[2]

Hub required

No^[1],[2]

Local control

Yes^[1]

Form

Wall switch^[1]

Dimmer

Yes^[1],[2]

Needs neutral wire

Yes^[2]

Gangs / channels

Unconfirmed

• Radio: 2.4 GHz Wi-Fi only (802.11b/g/n); Bluetooth 4.2 is used only for setup.
• Hub: No hub for basic use. A Tapo Hub is needed only for Tapo sensors and Smart Buttons, sold separately.
• Local control: TP-Link says it stays reachable on the local network through the Tapo app or another Matter controller when the internet is down.
• Form: Replaces a single-pole wall dimmer switch; indoor use only.
• Dimmer: TRIAC phase-cut (leading edge): 150 W LED, 300 W incandescent/halogen.
• Needs neutral wire: The datasheet lists a neutral wire in the wall box as a requirement. The product page only shows a neutral connection in its wiring steps.
• Gangs / channels: TP-Link gives no gang count; the datasheet asks for a standard lighting wall box at least 2 inches deep and the pack includes two wall plates.

Before you buy

• Needs a neutral wire in the wall box, and it replaces a single-pole switch only.
• 2.4 GHz Wi-Fi only.
• Dimming is TRIAC phase-cut (leading edge), so use TRIAC-dimmable LEDs.
• The Matter claim rests on TP-Link's statement; we found no CSA listing naming the S505D.

Quick answers

Does the Tapo S505D (US) work with Apple Home?

Yes, through Matter: add it with Apple Home's Matter pairing. TP-Link's spec table lists Apple Home, and its setup steps name the Apple Home app as a Matter app. More smart switches for Apple Home

Does the Tapo S505D (US) work with Google Home?

Yes, through Matter: add it with Google Home's Matter pairing. TP-Link's spec table lists Google Assistant, and its setup steps name the Google Home app as a Matter app. More smart switches for Google Home

Does the Tapo S505D (US) work with Amazon Alexa?

Yes, through Matter: add it with Amazon Alexa's Matter pairing. TP-Link's spec table lists Alexa, and its setup steps name the Alexa app as a Matter app. Matter setup needs an Echo that works as a Matter controller. More smart switches for Amazon Alexa

Does the Tapo S505D (US) work with SmartThings?

Yes, through Matter: add it with SmartThings' Matter pairing. TP-Link's spec table lists Samsung SmartThings as a Matter platform. More smart switches for SmartThings

Does the Tapo S505D (US) work with Home Assistant?

Yes. The Tapo S505D (US) works with Home Assistant directly. Home Assistant's TP-Link Smart Home integration lists the S505D among supported Tapo wall switches. As a Matter device it can also be added through the Matter integration. More smart switches for Home Assistant

Sources

1. Tapo S505D — TP-Link manufacturer · accessed Oct 18, 2026
2. Smart Wi-Fi Light Switch, Dimmer Single Pole Datasheet (Tapo S505D) — TP-Link manufacturer · accessed Oct 18, 2026
3. TP-Link Smart Home - Home Assistant — Home Assistant ecosystem · accessed Oct 18, 2026

Official product page: www.tp-link.com