Rank #7 in Best Smart Plug 2026: 10 Ranked, and Why 13 Amps Means Three Different Wattages
Meross MSS315 Matter Smart Plug Mini with Energy Monitoring, 4-Pack
Price and rating as shown on Amazon when we collected them. Both change.
The Meross MSS315 is a Matter smart plug sold here as a four-pack, and it takes seventh place in our smart plug ranking. At GBP 49.99 for four it is GBP 12.50 a socket, the dearest plug on this page, roughly half as much again as the EIGHTREE at GBP 8.75. What you pay for is Matter: it talks to Apple Home, Google Home, Alexa and SmartThings through one open standard rather than a manufacturer's cloud, so it keeps working if Meross changes its app, and it runs locally rather than through a server abroad. For a device left in a wall for a decade, that is a form of insurance the cheaper Wi-Fi plugs do not offer.
Two things are worth knowing before you buy, and this listing is unusually honest about the first. Two of its five bullets are spent naming exactly what you need: for Apple, iOS 16.1 or later, a 2.4GHz connection and a hub such as an Apple TV 4K or a HomePod Mini; for Android, a SmartThings, Echo or Nest hub. Matter plugs need a hub and most listings barely mention it. The second is the ratings: at 4.3 stars this is the second-lowest average on the page, and its breakdown carries the highest one-star share in the ranking at nine per cent, where the Tapo plugs sit at two or three. Matter setups are fiddlier and the reviews reflect it. Its electrical spec, by contrast, is among the cleanest here: 230 volts, 13 amps, three poles and three wires, all correct for a British plug.
How those 1,048 ratings break down
An average hides its own shape. This is the spread behind the 4.3 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Amperage | 13 Amps |
|---|---|
| Voltage | 230 Volts (AC) |
| Plug type (as listed) | wall plug |
| Number of poles | 3 |
| Number of wires | 3 |
| Connector type | Plug In |
| Item dimensions (D x W x H) | 61 x 48 x 33 millimetres |
| Item weight | 350 g |
| Material | Polycarbonate (PC) |
| Product grade | Residential |
| Number of items | 4 |
| Unit count (as listed) | 1.0 count |
| Included components | Matter Smart Plug x 4, User Manual x 1 |
| Colour | White |
| Product warranty | 2 year manufacturer |
| Specification met (as listed) | CE |
| Model number | MSS315 |
| Country of origin | China |
| ASIN | B0CNVHBCR3 |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchaseWorks well with HomeKit
“Very easy to setup with HomeKit, shows current energy usage, and works as intended.”
Verified purchaseGood smart plug, works as expected
“Setup was very easy and connected quickly with Google Home.”
What it is up against
The rivals it was ranked against in Best Smart Plug 2026: 10 Ranked, and Why 13 Amps Means Three Different Wattages.
Rank #1
Tapo P110 Smart Plug with Energy Monitoring, Max 13A, 2-Pack
£15.97
Rank #2
Tapo TP11 Compact Smart Plug with Energy Monitoring, 4-Pack
£31.96
Rank #3
Meross MSS305 Mini Smart Plug with Energy Monitoring, 13A 3120W, 2-Pack
£16.99
Rank #4
EIGHTREE 5GHz Smart Plug with Energy Monitoring, Max 13A, 4-Pack
£34.99
Questions people ask
Why is the MSS315 rated lower than the other plugs here?
Its average is 4.3 stars, the second-lowest on the page, and its breakdown has the highest one-star share in the ranking at nine per cent, against two or three for the Tapo plugs. Matter plugs need a hub and a specific setup, which is fiddlier than a plain Wi-Fi plug, and the reviews reflect that. The plugs that just join Wi-Fi rate higher because they ask less of the buyer.
What do I need to make it work?
The listing spells it out, which is rare. For Apple: iOS or iPadOS 16.1 or later, a 2.4GHz connection, and a hub such as an Apple TV 4K (2nd or 3rd generation) or a HomePod Mini. For Android: 8.1 or later, 2.4GHz, and a hub such as a SmartThings v3, an Echo (4th generation) or a Nest Hub (2nd generation). Without a hub, a Matter plug will not set up.
What does Matter actually get me?
It lets the plug work with Apple Home, Google Home, Alexa and SmartThings through one open standard instead of the maker's own cloud, so it keeps working if Meross changes its app, and it runs locally rather than through a remote server. For something you leave in a wall for years, that independence is the point.
How many watts can it take?
The table gives 13 amps at 230 volts, which is 2,990 watts, and 230 volts is Britain's real nominal figure. It is one of the cleaner electrical listings here: three poles and three wires, both correct for a British plug. A 3kW kettle or heater still sits at the 13-amp limit.
How many plugs do you get?
Four. The components line reads "Matter Smart Plug x 4" and "Number of Items" reads 4. One field disagrees, as on the other listings here: "Unit Count" reads 1.0.
Does it monitor energy use?
Yes. Meross states it has an internal power meter and the app shows real-time usage. As with every plug in this ranking, it does not publish an accuracy figure for that meter, so treat the readings as a guide.
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