Meross Smart Wi-Fi Hub MSH400HK Review: A Cheap HomeKit Hub With a Built-In 110 dB Siren
The Meross MSH400HK is an inexpensive hub for people already buying Meross sensors and accessories. It handles up to 24 sub-devices, connects to your network over 2.4 GHz Wi-Fi or Ethernet, and carries a 110 dB speaker that doubles as an alarm siren. Its best trick at this price is platform support: Alexa, Google Home and Apple HomeKit are all covered. What it is not is a universal hub. There is no Zigbee, no Z-Wave, no Thread border router and no Matter bridge, so it only extends the Meross ecosystem, and Home Assistant reaches it through a community integration rather than an official one.
- Meross ecosystem owners
- Apple HomeKit homes
- Budget hub setups
- Alarm siren automations
Pros
- Low price for a hub with Ethernet
- Works with Alexa, Google Home and Apple HomeKit
- Built-in 110 dB speaker that works as an alarm siren
- Supports up to 24 sub-devices
- Wired Ethernet or 2.4 GHz Wi-Fi connection
- Compact, at 76 x 76 x 26 mm
Cons
- No Zigbee, Z-Wave, Bluetooth, Thread or infrared support
- Not a Matter bridge, so devices are not exposed to Matter controllers
- No Samsung SmartThings support, and no official Home Assistant integration
- Only works with Meross sub-devices
- No built-in temperature, humidity, light or motion sensors
- No microphone, microSD slot or PoE
- No ONVIF, RTSP, Node-RED or Tailscale support
- One year warranty
Who is the Meross MSH400HK for?
It is the companion piece for a Meross setup: buy it because you want the brand's sensors and accessories to reach your phone and your voice assistant, not because you want a hub that unifies devices from different manufacturers. Support for Alexa, Google Home and Apple HomeKit means the sub-devices it manages show up in whichever of those apps you already use, and HomeKit support in particular is rare at this price. Capacity is 24 sub-devices, drawn from Meross's own range: water valves, sensors, a smoke alarm and an irrigation timer.
What stands out
Two things. First, the network options: alongside 2.4 GHz Wi-Fi it has an Ethernet port, and a wired connection is more stable and lower latency than Wi-Fi for a device that everything else in the system depends on. Second, the built-in 110 dB speaker, which turns the hub itself into an alarm siren, so a sensor trigger can make a noise loud enough to hear across the house without buying a separate siren. Meross also says the hub keeps its local alarm function during network interruptions. At 76 x 76 x 26 mm it is small enough to sit on a shelf near the router.
What to know before you buy
The protocol list is empty in every direction that matters for mixed-brand smart homes: no Zigbee coordinator, no Z-Wave, no Bluetooth, no Thread border router, no Matter bridge and no infrared. That means it will not adopt third-party sensors, and it will not expose anything to a Matter controller. Samsung SmartThings is not supported, and Home Assistant reaches it only through the community Meross LAN integration installed from HACS, so most automation happens in the three big voice platforms plus the Meross app. It has no built-in temperature, humidity, light or motion sensing of its own, no microphone, no microSD slot and no PoE, and none of the integrator features (ONVIF, RTSP, Node-RED, Tailscale) are available. It also runs on 2.4 GHz Wi-Fi only if you do not use the Ethernet port.
Is the Meross MSH400HK worth it?
At its price it is close to an accessory rather than an investment, and judged that way it does well: Ethernet, a loud built-in siren and HomeKit support are all above what the category normally offers this cheaply. The decision is really about lock-in. If your accessories are Meross, it is an easy yes. If you were hoping for one hub to run Zigbee sensors, Z-Wave locks and Matter devices together, this is not that product, and it will not become one.
Frequently asked questions
Does the Meross MSH400HK work with Apple HomeKit?
Yes. Apple HomeKit, Alexa and Google Home are all supported. Home Assistant works through the community Meross LAN integration, and Samsung SmartThings is not supported.
Can it connect Zigbee or Z-Wave devices?
No. It has no Zigbee, Z-Wave, Bluetooth, Thread or Matter bridge capability, so it only works with Meross sub-devices.
How many devices can it handle?
Up to 24 Meross sub-devices, such as water valves, sensors, a smoke alarm and an irrigation timer. Devices from other brands cannot join it.
Can it be wired to the router?
Yes. It has an Ethernet port as well as 2.4 GHz Wi-Fi, and the wired connection is the more stable option for a hub.
What is the built-in speaker for?
It is a 110 dB speaker, loud enough to act as an alarm siren when one of your sub-devices triggers, and Meross says the local alarm keeps working during network interruptions.




