Onvis Smart Plug S4, over Thread, 15A/1800W Max
This smart plug is Matter certified (certificate CSA2571BMAT46701-24, certified Sep 11, 2025). It uses Thread, so it needs a Thread border router as well as 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 Onvis.
Certificate data: CSA ledger read . Set-up steps and sources: Apple Home · Google Home · Alexa · SmartThings · Home Assistant
CSA Matter certified (certificate CSA2571BMAT46701-24). Uses Thread, so it needs a Thread border router as well as your platform’s Matter controller.
At a glance: Matter certified: Yes, Sep 11, 2025 · Connectivity: Thread · Works with: Apple Home, Amazon Alexa, Google Home and Samsung SmartThings · Thread border router: Needed (uses Thread)
- Works with
- Apple Home, Amazon Alexa, Google Home and Samsung SmartThings (named by the maker)
- CSA certificate
- CSA2571BMAT46701-24, certified Sep 11, 2025
- Network & hub
- Thread; needs a Thread border router as well as your platform’s Matter controller
Updated : the last change to this page’s certification, platform or store facts.
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Amazon
Compare prices
2 stores
Onvis
4-pack
Direct, non-affiliate linkNotes
Onvis's 4-pack of the S4 plug. The same page also sells 1- and 2-packs; confirm the pack, current price and delivery at Onvis.
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: CSA2571BMAT46701-24Certified software versions
The CSA ledger lists 2 certified software versions for the device on certificate CSA2571BMAT46701-24. The most recent is software 1.4.0, certified Sep 11, 2025, for Matter 1.4. That is the certificate this page shows.
- Software 1.4.0 · certified Sep 11, 2025 · Matter 1.4 · CSA2571BMAT46701-24 · this page's certificate
- Software 1.1.0-315 · certified May 24, 2023 · Matter 1.0 · CSA23587MAT41100-24
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 5181, product ID 4097), read Nov 10, 2026.
What its Matter certificate covers
Per the CSA compliance document for certificate CSA2571BMAT46701-24 (firmware 1.4.0, Matter 1.4, certified Sep 11, 2025):
- Energy monitoring over Matter
- Not listed in this certification: certificate CSA2571BMAT46701-24 lists neither the Electrical Power Measurement nor the Electrical Energy Measurement cluster.
- Matter network
- Thread, with Bluetooth for setup
- Matter device type (CSA page)
- On/Off Plug-in Unit (0x010A)
- On/Off endpoints
- 1
- Clusters listed
- Groups, Identify, On/Off
The Onvis Smart Plug S4 is a compact indoor smart plug for loads up to 15A / 1800W on a 120V outlet. Onvis says two S4 plugs fit in the same outlet without blocking each other, and it supports on/off schedules and timers. It measures 65 x 39 x 51 mm and is set up over Bluetooth. Onvis asks owners on firmware 1.1.0-315 to update to 1.1.11 in its iOS Onvis Home app.
Source: Onvis's product page, read Oct 26, 2026.
Specifications
- Brand
- Onvis
- Category
- Plugs
- Protocols
- Thread
- Certificate ID
- CSA2571BMAT46701-24
- Certified
- Sep 11, 2025
- Firmware
- 1.4.0
Ecosystem compatibility
Quick answers
- Is this smart plug Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA2571BMAT46701-24, certified Sep 11, 2025.
- Does this smart plug work with Apple Home or HomeKit?
- Yes. The maker’s own site names Apple Home, and it is Matter certified (certificate CSA2571BMAT46701-24). Apple says an iPhone using iOS 18 or later can add Matter accessories to the Home app without a home hub. A Thread accessory needs a Thread-enabled home hub such as an Apple TV 4K, HomePod (2nd generation) or HomePod mini, or a compatible third-party Thread border router. Apple’s Matter page lists outlets among the accessory types the Home app supports.
- Does this smart plug work with Google Home?
- Yes. The maker’s own site names Google Home, and it is Matter certified (certificate CSA2571BMAT46701-24). 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. A Thread device needs a hub that is also a Thread border router: Google Home Speaker (2026), Nest Hub (2nd gen), Nest Hub Max, Nest Wifi Pro (Wi-Fi 6E) or Google TV Streamer (4K). Google’s supported-device-types page lists the On/Off Plug-in Unit type.
- Does this smart plug work with Alexa?
- Yes. The maker’s own site names Alexa, and it is Matter certified (certificate CSA2571BMAT46701-24). 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. A Thread device needs an Echo with a built-in Thread border router, such as the Echo (4th Gen) or Echo Hub.
- Does this smart plug work with Samsung SmartThings?
- Yes. The maker’s own site names SmartThings, and it is Matter certified (certificate CSA2571BMAT46701-24). SmartThings adds Matter devices through the SmartThings app and a Matter controller. Samsung says a Thread device needs a Matter controller that includes a Thread border router; the latest SmartThings Hub, SmartThings Station, Samsung TVs and Samsung Family Hub refrigerators have a Thread border router built in.
- Does this smart plug work with Home Assistant?
- Likely. It is Matter certified (certificate CSA2571BMAT46701-24), 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.” A Thread device needs a Thread border router, which Home Assistant describes as a network device that connects a Thread mesh network to other IP networks such as Ethernet or Wi-Fi.
- Does this smart plug use Thread or Wi-Fi?
- Thread. Its catalog record lists Thread, and Matter devices that use Thread need a Thread border router in the home, in addition to your platform’s Matter controller.
- Does this smart plug need a hub or a Thread border router?
- Yes: a Thread border router, in addition to your platform’s Matter controller. A Thread border router connects Thread devices to your home network; Apple TV 4K, HomePod mini, Nest Hub (2nd gen) and Echo (4th Gen) are examples, and each platform lists its own.
- When was this smart plug Matter certified?
- The CSA certified it on Sep 11, 2025 (certificate CSA2571BMAT46701-24). 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 Onvis. 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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Onvis Smart Plug S4
CSA certified · 4-pack