TP-Link Tapo P400M Smart Outdoor Plug, 2 Outlets
The Tapo P400M is Matter certified (certificate CSA25119MAT45163-24, certified Mar 5, 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 Apple Home, Google Home, Alexa and SmartThings. 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 CSA25119MAT45163-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Mar 5, 2025 · Connectivity: Wi-Fi · Works with: Apple Home, Amazon Alexa, Google Home and Samsung SmartThings · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Apple Home, Amazon Alexa, Google Home and Samsung SmartThings (named by the maker)
- CSA certificate
- CSA25119MAT45163-24, certified Mar 5, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
- Model number
- P400M
Updated : the last change to this page’s certification, platform or store facts.
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TP-Link Tapo
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Check the model, region and pack size at the retailer. Prices and availability are confirmed there.
CSA Matter Certified
Certificate: CSA25119MAT45163-24Matter 1.3 certificate
Its certificate, CSA25119MAT45163-24, is for Matter 1.3, certified Mar 5, 2025. The Matter version is the specification version on the certificate's ledger record.
Source: CSA Distributed Compliance Ledger, read Nov 10, 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 CSA25119MAT45163-24. The most recent is software 1.3.0, certified Mar 5, 2025, for Matter 1.3. That is the certificate this page shows.
- Software 1.3.0 · certified Mar 5, 2025 · Matter 1.3 · CSA25119MAT45163-24 · this page's certificate
- Software 1.0.0 · certified Jan 4, 2023 · Matter 1.0 · CSA23001MAT40514-24
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 4488, product ID 259), read Nov 10, 2026.
The TP-Link Tapo P400M is an outdoor Wi-Fi smart plug with two outlets that can be switched together or one at a time. TP-Link rates it IP65 weatherproof for gardens, patios and backyards, and says its dual antennas reach up to 300ft in open areas. Unused sockets should stay closed with the included weather-resistant cover. The Tapo app adds schedules and an away mode.
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
- Plugs
- Protocols
- Wi-Fi
- Certificate ID
- CSA25119MAT45163-24
- Certified
- Mar 5, 2025
- Model
- P400M
- Firmware
- 1.3.0
Ecosystem compatibility
Quick answers
- Is this smart plug Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA25119MAT45163-24, certified Mar 5, 2025.
- Does the Tapo P400M work with Apple Home or HomeKit?
- Yes. The maker’s own site names Apple Home, and it is Matter certified (certificate CSA25119MAT45163-24). 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 outlets among the accessory types the Home app supports.
- Does the Tapo P400M work with Google Home?
- Yes. The maker’s own site names Google Home, and it is Matter certified (certificate CSA25119MAT45163-24). 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 On/Off Plug-in Unit type.
- Does the Tapo P400M work with Alexa?
- Yes. The maker’s own site names Alexa, and it is Matter certified (certificate CSA25119MAT45163-24). 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 the Tapo P400M work with Samsung SmartThings?
- Yes. The maker’s own site names SmartThings, and it is Matter certified (certificate CSA25119MAT45163-24). SmartThings adds Matter devices through the SmartThings app and a Matter controller.
- Does the Tapo P400M work with Home Assistant?
- Likely. It is Matter certified (certificate CSA25119MAT45163-24), 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 smart plug 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 the Tapo P400M 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 the Tapo P400M Matter certified?
- The CSA certified it on Mar 5, 2025 (certificate CSA25119MAT45163-24). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy this smart plug?
- 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 P400M
CSA certified