Tapo S515D Smart 3-Way Dimmer Light Switch Kit Neutral Wire Required
The Tapo S515D Smart 3-Way Dimmer Light Switch Kit Neutral Wire Required is Matter certified (certificate CSA250FFMAT45137-24, certified Feb 27, 2025). It uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller. A certified Matter device can be added to any Matter controller whose app supports its device type, such as Apple Home, Google Home, Alexa, SmartThings or Home Assistant; features vary by app. The maker’s own site names Alexa. Sold in the US at Amazon and TP-Link Tapo.
Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA250FFMAT45137-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Feb 27, 2025 · Connectivity: Wi-Fi · Platforms: Amazon Alexa (named by the maker); Apple Home and Google Home (listed in its catalog record, unverified) · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Amazon Alexa (named by the maker)
- CSA certificate
- CSA250FFMAT45137-24, certified Feb 27, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
- Model number
- S515D
Updated : the last change to this page’s certification, platform or store facts.
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CSA Matter Certified
Certificate: CSA250FFMAT45137-24Matter 1.3 certificate
Its certificate, CSA250FFMAT45137-24, is for Matter 1.3, certified Feb 27, 2025. The Matter version is the specification version on the certificate's ledger record.
Source: CSA Distributed Compliance Ledger, read Oct 31, 2026.
What Matter 1.3 added, and which devices use it →Certified software versions
The CSA ledger lists 2 certified software versions for the device on certificate CSA250FFMAT45137-24. The most recent is software 1.3.0, certified Feb 27, 2025, for Matter 1.3. That is the certificate this page shows.
- Software 1.3.0 · certified Feb 27, 2025 · Matter 1.3 · CSA250FFMAT45137-24 · this page's certificate
- Software 1.0.0 · certified Jun 17, 2024 · Matter 1.0 · CSA24335MAT43496-24
Certification covers each software version listed. It does not establish the software on a unit you buy.
Source: CSA Distributed Compliance Ledger, device record (vendor ID 5010, product ID 514), read Oct 31, 2026.
The Tapo S515D Smart 3-Way Dimmer Light Switch Kit lets you dim and switch one light from more than one spot, as in a 3-way circuit. TP-Link lists 0-100% brightness control, schedules and timers, and an away mode, and says the Tapo app shows daily energy use with bill estimates. The app also guides you through connecting the wires during installation.
Sources: TP-Link's Tapo US store page, read Oct 26, 2026; TP-Link's Tapo product page, read Oct 26, 2026.
Specifications
- Brand
- Tapo
- Category
- Switches
- Protocols
- Wi-Fi
- Certificate ID
- CSA250FFMAT45137-24
- Certified
- Feb 27, 2025
- Model
- S515D
- Firmware
- 1.3.0
Ecosystem compatibility
Checked platforms are named on the maker’s own site. Unverified: listed in its catalog record, not confirmed by the maker; check exact controller support.
Quick answers
- Is this switch Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA250FFMAT45137-24, certified Feb 27, 2025.
- Does this switch work with Apple Home or HomeKit?
- Likely. It is Matter certified (certificate CSA250FFMAT45137-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Apple Home on a page we hold. Apple says an iPhone using iOS 18 or later can add Matter accessories to the Home app without a home hub. Apple’s Matter page lists lights among the accessory types the Home app supports.
- Does this switch work with Google Home?
- Likely. It is Matter certified (certificate CSA250FFMAT45137-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Google Home on a page we hold. Google says you need a Matter-enabled hub device set up on your home wireless network before you can add Matter devices to Google Home. Google’s supported-device-types page lists the Dimmable Light type.
- Does this switch work with Alexa?
- Yes. The maker’s own site names Alexa, and it is Matter certified (certificate CSA250FFMAT45137-24). Alexa needs a Matter-compatible Echo; Amazon says its Echo devices support “a subset of Matter 1.5 and lower device types”, so check that yours does.
- Does this switch work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA250FFMAT45137-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named SmartThings on a page we hold. SmartThings adds Matter devices through the SmartThings app and a Matter controller.
- Does this switch work with Home Assistant?
- Likely. It is Matter certified (certificate CSA250FFMAT45137-24), so any Matter controller whose app supports its device type can add it. The maker hasn’t named Home Assistant on a page we hold. Home Assistant says: “Adding a new Matter device only works in the Home Assistant Companion app.”
- Does this switch use Thread or Wi-Fi?
- Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
- Does this switch need a hub or a Thread border router?
- No hub of its own and no Thread border router: it joins your Wi-Fi network. You still need your platform’s Matter controller (a smart speaker, display, streaming box or hub), though Apple says an iPhone using iOS 18 or later can add Matter accessories without a home hub.
- When was this switch Matter certified?
- The CSA certified it on Feb 27, 2025 (certificate CSA250FFMAT45137-24). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy this switch?
- MatterCatalog has verified store links for it at Amazon and TP-Link Tapo. Check the current price, model and pack size at the store.
From this product’s catalog record, not hands-on testing. Editorial policy
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Tapo S515D
CSA certified