Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M)
The Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M) is Matter certified (certificate CSA2511CMAT45166-24, 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 and Alexa. Sold in the US at Amazon and Newegg.
Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA2511CMAT45166-24). 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 and Google Home · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Apple Home, Amazon Alexa and Google Home (named by the maker)
- CSA certificate
- CSA2511CMAT45166-24, certified Mar 5, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
- Model number
- KP125M
Updated : the last change to this page’s certification, platform or store facts.
Independent guide. We may earn a commission through affiliate links. Direct non-affiliate links are labeled. How our links work
Amazon
Compare prices
2 stores
Newegg
2-pack
Notes
Affiliate link to Newegg's US product page for TP-Link KP125MP2 Kasa Smart Wi-Fi Plug Slim, Energy Monitoring; GTIN 840030706295 equals this record's GTIN. Newegg Marketplace listing (third-party seller); confirm the seller and condition. Confirm the exact variant, current price and delivery at the retailer.
These are different packages and selections, not like-for-like prices. Check condition, pack quantity, included accessories and model before buying. Prices and availability are confirmed at each retailer.
CSA Matter Certified
Certificate: CSA2511CMAT45166-24Certified software versions
The CSA ledger lists 2 certified software versions for the device on certificate CSA2511CMAT45166-24. 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 · CSA2511CMAT45166-24 · this page's certificate
- Software 1.0.0 · certified Dec 27, 2022 · Matter 1.0 · CSA22401MAT40401-24
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 5009, product ID 257), read Nov 10, 2026.
What its Matter certificate covers
Per the CSA compliance document for certificate CSA2511CMAT45166-24 (firmware 1.3.0, Matter 1.3, certified Mar 5, 2025):
- Energy monitoring over Matter
- Yes. Certificate CSA2511CMAT45166-24 lists the Electrical Power Measurement and Electrical Energy Measurement clusters (cumulative and periodic energy readings).
- Matter network
- Wi-Fi, with Bluetooth for setup
- Matter device type (CSA page)
- On/Off Plug-in Unit (0x010A)
- On/Off endpoints
- 1
- Clusters listed
- Electrical Energy Measurement, Electrical Power Measurement, Power Topology, Groups, Identify, On/Off
The Kasa KP125M (Kasa Smart Wi-Fi Plug Slim with Energy Monitoring) is a Matter smart plug that connects over Wi-Fi. Kasa says it monitors the real-time and historical power use of what is plugged in, and that it is built small so it does not block the adjacent outlet. You can set it up over Bluetooth in the Kasa Smart app, or scan its Matter code with a Matter app such as Apple Home, Google Home or the Alexa app. Kasa rates it 15 A, 1800 W on 100-120 V.
Specifications
- Brand
- Kasa
- Category
- Plugs
- Protocols
- Wi-Fi, Matter
- Certificate ID
- CSA2511CMAT45166-24
- Certified
- Mar 5, 2025
- Model
- KP125M
- Firmware
- 1.3.0
Ecosystem compatibility
Quick answers
- Is the Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M) Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA2511CMAT45166-24, certified Mar 5, 2025.
- Does the Kasa KP125M work with Apple Home or HomeKit?
- Yes. The maker’s own site names Apple Home, and it is Matter certified (certificate CSA2511CMAT45166-24). 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 Kasa KP125M work with Google Home?
- Yes. The maker’s own site names Google Home, and it is Matter certified (certificate CSA2511CMAT45166-24). 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 Kasa KP125M work with Alexa?
- Yes. The maker’s own site names Alexa, and it is Matter certified (certificate CSA2511CMAT45166-24). 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 Kasa KP125M work with Samsung SmartThings?
- Likely. It is Matter certified (certificate CSA2511CMAT45166-24), 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 the Kasa KP125M work with Home Assistant?
- Likely. It is Matter certified (certificate CSA2511CMAT45166-24), 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 the Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M) 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 Kasa KP125M 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 Kasa KP125M Matter certified?
- The CSA certified it on Mar 5, 2025 (certificate CSA2511CMAT45166-24). That is its certification date, not a retail release date, which MatterCatalog does not state.
- Where can I buy the Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M)?
- MatterCatalog has verified store links for it at Amazon and Newegg. Check the current price, model and pack size at the store.
- Does the Kasa Smart Wi-Fi Plug Slim with Energy Monitoring (KP125M) report energy use over Matter?
- Yes. The CSA compliance document for its Matter certificate CSA2511CMAT45166-24 (firmware 1.3.0, Matter 1.3) lists the Electrical Power Measurement and Electrical Energy Measurement clusters, the clusters Matter uses to report power and energy readings.
From this product’s catalog record, not hands-on testing. Editorial policy
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Same CSA certificate, other catalog pages
These pages list a record with the same CSA certificate, CSA2511CMAT45166-24. Check the pack size and finish on each page.
- Kasa Smart Wifi Plug, Energy MonitoringWi-Fi · CSA certificate on file · US store link
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Kasa KP125M
CSA certified · 2-pack · KP125MP2