Meross
Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack)
- HACS component
- Local control
- Wi-Fi
Prices verified October 2026
See more smart plugs & energy picks on our Amazon storefront →Our verdict
This 2-pack lands around £11 a plug — cheaper than a single Tapo P110 (£12.99), but pricier than Tapo's own multipacks, which dip under £8/unit. The catch is HA support isn't native: it's the community meross_lan integration via HACS, so functionality depends on one volunteer maintainer rather than a vetted core integration — fine for tinkerers, a dealbreaker if you want zero-touch setup. Once installed it runs fully locally over HTTP/MQTT with no cloud round-trip. Best fit is multi-socket energy-monitoring rollouts (workshop, home office, several appliances) where the per-plug price undercuts buying singles — not a first smart plug for HA beginners.
What can Home Assistant control on the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack)?
| Control | Type | What it does |
|---|---|---|
| Switch | Toggle | Turn the plug on/off |
| Power / Current / Voltage | Sensor | Live readings |
| Energy | Sensor (kWh) | Hardware counter — resets at the device's own local midnight |
| Energy estimate | Sensor (kWh) | Software-sampled counter — resets on HA's clock, doesn't survive an HA restart |
The meross_lan HACS integration exposes two distinct energy sensors per plug — a hardware-computed one that resets at the device's own local midnight, and a software-sampled energy_estimate that resets on HA's clock and doesn't survive an HA restart — worth knowing before building a cost-tracking dashboard on either alone. Use energy_estimate specifically for an idle-appliance alert (wattage below a floor for 5+ minutes). Some MSS310 units on hardware 6.0.0/firmware 6.3.21 have shipped with switching working but all power/energy readings stuck at zero — a batch-specific firmware bug, not a setup mistake.
Specs
| voltage | 100-240V AC, 50/60Hz |
|---|---|
| max load | 13A |
| pack size | 2 |
| plug type | BS1363 Type G |
| wifi band | 2.4GHz only (Bluetooth used for initial setup) |
| hub required | false |
| dimensions mm | 67 x 67 x 48 (W x D x H, excl. plug pins) |
| rated power w | 3120 |
| energy monitoring | true |
How does the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) (this product) | £21.99 | Wi-Fi | Yes | HACS |
| Aqara Power Plug H2 UK (RGB) | £32.99 | Zigbee, Thread, Matter, Bluetooth | Yes | Works with HA |
| Aqara Wall Outlet H2 UK | £67.99 | Matter, Thread, Zigbee | Yes | Native |
| Eve Energy (Matter) UK Smart Plug | £39.95 | Thread, Matter, Bluetooth | Yes | Works with HA |
Frequently asked questions
- Does the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) work with Home Assistant locally?
- Yes. The Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) is controlled locally in Home Assistant through a community integration installed through HACS (meross_lan), so it keeps working if your internet connection or the Meross cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) use, and do I need a hub?
- The Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) uses Wi-Fi. To pair it with Home Assistant you need no hub — it joins your Wi-Fi network directly. Meross's own hub is not required when you integrate through a community integration installed through HACS (meross_lan).
- How much does the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) cost in the UK?
- The lowest price we have listed for the Meross Smart Wi-Fi Plug with Energy Monitor MSS310 (2-pack) is £21.99 at Amazon UK. Prices were last checked in October 2026 and change often, so confirm on the retailer's page before buying.