Smart plugs have quietly become one of the most popular entry points into home automation, and it's easy to see why. They're affordable, simple to install, and instantly add remote control and energy monitoring to everyday appliances. But as the smart home market has matured, the choices have become more nuanced. Protocol matters. Ecosystem matters. And for UK homeowners trying to build something that lasts, picking the wrong smart plug can mean compatibility headaches down the line. The debate between Matter and Zigbee sits at the heart of many of these decisions, and it's one worth understanding before you commit.
By the end of this article, you'll have a clear picture of how the Sonoff Smart iPlug Gen2 S61s and the ThirdReality Smart Plug E2 compare across setup, performance, energy monitoring, and everyday usability — so you can match the right plug to your specific smart home setup and lifestyle. Whether you're prioritising broad platform flexibility, mesh network strength, or detailed energy insights, this comparison will help you land on the right answer.
At Vesternet, we've spent years working hands-on with Z-Wave, Zigbee, and Matter technology, helping UK homeowners build smart homes that actually work. This comparison draws on that technical depth and real-world experience — not marketing copy — so you can make a genuinely informed decision.
Meet the Sonoff S61s: Matter-Powered Smart Plug Built for the Broadest Ecosystem
The Sonoff Smart iPlug Gen2 S61s is a Matter over Wi-Fi smart plug designed for users who want maximum platform flexibility without the complexity of a dedicated hub. Matter is an open smart home standard that allows devices to work natively across multiple ecosystems simultaneously, and the S61s takes full advantage of that. It connects directly with Apple Home, Amazon Alexa, Google Home, SmartThings, and Home Assistant — all without requiring a separate bridge or coordinator. For anyone building a mixed-platform smart home, that's a genuinely significant advantage.
Beyond its broad compatibility, the S61s comes with a well-rounded feature set. It supports real-time energy monitoring — tracking voltage, current, power, and consumption — and delivers daily, monthly, and semi-annual usage reports with the ability to set custom electricity rates for different time periods. Overload protection is fully customisable up to 16A and 3680W, automatically cutting power if thresholds are exceeded. The housing is built from V-0 flame-retardant materials, and the plug supports local control even without an active internet connection. It uses a Type F (Schuko) form factor, so UK buyers should factor that into their installation planning. Operating temperatures range from -10°C to 40°C.
Meet the ThirdReality Smart Plug E2: Zigbee 3.0 Reliability with Mesh Network Advantages
The ThirdReality Smart Plug E2 takes a different approach, operating on Zigbee 3.0 — a proven, low-power wireless protocol built specifically for smart home devices. Unlike Wi-Fi plugs, the E2 requires a compatible Zigbee hub or gateway to function, but in return it contributes something genuinely useful to your wider network: it acts as a Zigbee signal repeater, helping to extend and strengthen your mesh. The more Zigbee devices you add, the more resilient your network becomes — and the E2 plays an active role in that.
The E2 is well-specified for everyday use. It supports real-time energy monitoring, power state recovery after power cuts (so devices return to their previous on/off state automatically), and includes child safety shutters for added household protection. A manual override button lets anyone control the plug without needing an app. The design is wall-mountable for flexible placement, and the LED indicator clearly communicates device status at a glance. It handles loads up to 16A (3600W) at 230V AC, and operates between 0°C and 40°C — making it suitable for most indoor environments.
Matter vs Zigbee: How Protocol Choice Shapes Setup, Control, and Long-Term Compatibility
The most fundamental difference between these two plugs isn't a feature — it's the wireless protocol underneath everything else. That choice shapes how you set up the plug, which platforms you can use, how your network behaves under pressure, and how future-proof your investment is. Understanding both protocols clearly is the key to making the right call.
Matter over Wi-Fi: What It Means in Practice
The Sonoff S61s uses Matter over Wi-Fi, which means it connects directly to your existing home Wi-Fi network and registers with any Matter-compatible platform. There's no hub required, no coordinator to configure, and no additional hardware to purchase. Setup is handled through whichever smart home app you already use — whether that's the Apple Home app, Google Home, Amazon Alexa, or Home Assistant. Matter's key promise is native multi-platform support, meaning the same physical device can simultaneously appear in more than one ecosystem. For newcomers or users across multiple platforms, this is a major simplification.
Zigbee 3.0: Mesh Strength and Hub Dependency
The ThirdReality E2 runs on Zigbee 3.0, which operates on the 2.4GHz band but uses a very different architecture. Zigbee devices form a mesh network, passing signals between one another to extend range and improve reliability. The E2 actively contributes to this as a Zigbee repeater — a meaningful benefit in larger properties where signal coverage can be patchy. The trade-off is that you need a compatible Zigbee hub or gateway to act as the network coordinator. This adds a step (and potentially some cost) for newcomers, but for users already running a Zigbee setup, the E2 slots in naturally.
- Matter (S61s): No hub needed, works directly with major platforms out of the box
- Zigbee (E2): Requires a hub, but contributes to and benefits from mesh network resilience
- Matter offers broader native platform support; Zigbee offers tighter ecosystem integration
- Both protocols support local control, reducing reliance on cloud services
On the question of offline and local control, both protocols handle it reasonably well. The S61s includes local control functionality that operates without an active internet connection — a feature explicitly built into the Matter specification. The E2, operating through a Zigbee hub, also processes commands locally within your network rather than routing everything through the cloud. This makes both plugs more resilient than typical Wi-Fi smart devices that depend entirely on manufacturer cloud servers.
From a long-term perspective, Matter's backing by Apple, Google, Amazon, and the Connectivity Standards Alliance gives it strong industry momentum. Zigbee 3.0, meanwhile, is a mature and well-supported standard with an enormous installed base across millions of smart home devices worldwide. Neither protocol is going anywhere soon — but Matter's manufacturer-agnostic design gives it a slight edge for users who want future flexibility without being locked into a specific ecosystem.
Speed, Stability, and Day-to-Day Usability: How Each Plug Performs in a Real Smart Home
Specifications tell you what a product can do in theory. Day-to-day performance tells you whether it actually earns its place in a working smart home. Both plugs are designed for remote control and automation, but they go about it in different ways — and those differences become apparent once you're living with them.
Sonoff S61s: Responsiveness and Energy Reporting
Because the S61s connects directly over Wi-Fi, commands from your chosen platform reach the device without passing through an additional coordinator layer. Voice commands via Alexa or Apple Home tend to feel snappy, and app-triggered automations respond reliably when your Wi-Fi network is performing well. The energy monitoring capabilities are a highlight — real-time tracking of voltage, current, and power consumption is paired with structured reporting tools covering daily, monthly, and semi-annual periods. The ability to enter custom electricity rates for different time periods makes cost tracking genuinely practical rather than just a raw data dump.
ThirdReality E2: Mesh Stability and Recovery
The E2 benefits from Zigbee's inherently low-latency communication within the mesh. Commands processed locally through your Zigbee hub are typically fast and consistent, with the mesh architecture providing a degree of built-in redundancy. One standout practical feature is power state recovery — if the plug loses power during an outage, it returns to its previous state when power is restored. This is especially useful for devices that need to resume normal operation automatically. Real-time energy monitoring is included, though the reporting depth doesn't match the S61s's structured daily and monthly breakdown with custom rate settings.
- S61s delivers detailed energy reports with custom electricity rate configuration
- E2 offers real-time monitoring with the added benefit of power state recovery
- Both support schedule and scene automation via their respective platforms
Sonoff S61s Strengths and Trade-Offs: What You Gain and What to Consider
The Sonoff Smart iPlug Gen2 S61s is a genuinely well-rounded smart plug, and its strengths are particularly compelling for users who want broad compatibility without the overhead of additional hardware. Matter over Wi-Fi means it works natively with Apple Home, Google Home, Amazon Alexa, SmartThings, and Home Assistant from day one — no hub, no bridge, no extra configuration. The energy monitoring suite is one of the most complete you'll find in this category, combining real-time data with structured usage reports and custom electricity rate settings that make it useful for actual cost management. Overload protection is customisable up to 16A and 3680W, the V-0 flame-retardant housing adds genuine peace of mind, and local control keeps the plug functional even during internet outages.
Points to Consider
- Wi-Fi dependency can be a limitation on congested networks or in large properties with weaker signal coverage
- The Type F (Schuko) form factor requires an adapter for use with standard UK Type G sockets
- It does not act as a repeater or contribute to any mesh network topology
These trade-offs won't affect every user equally. For most households with a reliable Wi-Fi network and an interest in energy management and home automation, the S61s's advantages clearly outweigh its limitations. But they're worth considering before committing.
ThirdReality Smart Plug E2 Strengths and Trade-Offs: What You Gain and What to Consider
The ThirdReality Smart Plug E2 earns its place in a Zigbee-based smart home through a combination of solid reliability and genuinely useful practical features. Its role as a Zigbee repeater means it actively improves your mesh network as well as adding smart control to an appliance — two useful things from one device. Child safety shutters provide protection in family homes, and power state recovery ensures connected devices resume correctly after power interruptions. The manual override button makes it accessible for household members who don't interact with the app, and the wall-mountable design adds placement flexibility that a standard plug-in socket can't offer.
Points to Consider
- A compatible Zigbee hub or gateway is required — adding cost and setup steps for newcomers
- Native platform compatibility is narrower than Matter devices by design
- Operating temperature starts at 0°C, compared to the S61s's lower limit of -10°C
- Energy reporting tools are less structured than the S61s's daily/monthly breakdown with rate customisation
For users already running a Zigbee ecosystem, these trade-offs are minimal — the hub is already there, and the E2 simply extends what's working. For those starting fresh, the hub requirement is the most significant consideration to factor in.
Finding Your Perfect Match: Which Smart Plug Suits Your Lifestyle and Setup?
Features and specifications only take you so far. The better question is which plug actually fits your situation — and that comes down to your existing smart home setup, the platforms you use, and the capabilities that matter most in daily life. Rather than a single universal answer, here's a practical breakdown by user profile.
Choose the Sonoff S61s If You...
- Are new to smart home technology and want plug-and-play setup without buying a hub
- Use multiple platforms (Apple Home, Google Home, Alexa) and need a single device that works across all of them
- Want detailed energy monitoring with cost tracking and custom electricity rate configuration
- Are renting and need a portable, self-contained smart plug solution
The S61s is particularly well-suited to the platform-agnostic user. Because Matter allows native integration across all the major ecosystems simultaneously, there's no need to choose one platform and stick to it. For energy-conscious homeowners who want to track consumption costs accurately — not just see raw wattage — the S61s's reporting tools make a real difference. Home Assistant users will also appreciate its local control capability, which reduces cloud dependency and keeps automations running even without internet access.
Choose the ThirdReality E2 If You...
- Already have a Zigbee hub or gateway and want to expand your mesh network
- Need child safety shutters for a family home environment
- Want power state recovery to ensure appliances resume correctly after outages
- Prefer the stability and low-latency performance of Zigbee communication
For households already running Zigbee devices, the E2 is a natural extension rather than a compromise. Its repeater function actively improves coverage for your existing Zigbee devices — meaning adding the E2 benefits your whole network, not just the socket it's connected to. Families will also appreciate the child safety shutters as a practical safety consideration that Matter plugs don't typically include. Advanced Home Assistant users running a Zigbee coordinator will find the E2 integrates cleanly into their setup, offering stable local control and automation without relying on any cloud infrastructure.
Property size and installation environment also play a role. In larger homes where Wi-Fi signal is inconsistent in certain rooms, a Zigbee mesh can provide more reliable coverage by hopping signals between devices. In smaller homes or flats with strong Wi-Fi, the S61s's direct connection approach is perfectly adequate and considerably simpler to set up.
Sonoff S61s vs ThirdReality E2: The Verdict and Where to Find Them at Vesternet
Bringing this comparison together, the Sonoff Smart iPlug Gen2 S61s and the ThirdReality Smart Plug E2 are both capable, well-designed smart plugs — but they serve genuinely different needs. The S61s stands out for its hub-free Matter compatibility, detailed energy monitoring with cost tracking, customisable overload protection, V-0 flame-retardant construction, and native support across Apple Home, Google Home, Alexa, SmartThings, and Home Assistant. It's the stronger choice for anyone who wants flexibility, minimal setup friction, and a rich home automation experience without committing to a specific ecosystem. The ThirdReality E2, by contrast, is a compelling option for established Zigbee households — contributing to mesh network strength as a repeater, offering power state recovery, child safety shutters, and the stable low-latency performance that Zigbee is known for.
Neither plug is objectively the better product. The right choice depends entirely on where you are in your smart home journey. Before deciding, it's worth asking yourself a few practical questions: Do you already have a Zigbee hub? Do you want structured energy cost reports or is real-time monitoring sufficient? Is platform flexibility more important to you than mesh network contribution? Your answers will point clearly towards one or the other.
If you'd like to explore both options further, you can find full specifications, compatibility details, and expert support for the Sonoff Smart iPlug Gen2 S61s and the ThirdReality Smart Plug E2 on the Vesternet website. Take your time, compare the details, and feel free to reach out if you'd like guidance tailored to your specific setup.
