SMLIGHT SLZB-MR1 Review: A Flexible Multi-Radio Zigbee, Thread and Matter Coordinator for Home Assistant
A universal Ethernet, USB, Wi-Fi and PoE coordinator with dual radios for Zigbee plus Thread/Matter, built for Home Assistant power users who want placement flexibility, not plug-and-play simplicity.
The SMLIGHT SLZB-MR1 is a universal, multi-radio coordinator that owners running Home Assistant describe as rock-solid and refreshingly flexible. Unlike a plain USB dongle, it connects over Ethernet, USB, Wi-Fi or PoE, which makes placement far easier once your Zigbee network grows, and it carries dual radios so it can run Zigbee alongside Thread and Matter. Owners praise its stability over Ethernet with PoE, quick device pairing, reliable routing, and the fact that it can be flashed to run OpenThread (OTBR) directly from Home Assistant's add-on with a one or two click firmware option. Many buyers use it as an upgrade from the Zigbee-only SLZB-06 and value the freedom to switch between ZHA and Zigbee2MQTT or split radios for different roles. It is not, however, a plug-and-play toy: there is a genuine learning curve, documentation is a bit sparse (owners lean on YouTube), and a few report needing occasional reboots or seeing the Zigbee network not restart cleanly after a Home Assistant reboot, plus a fiddly USB-C case tolerance on some units. For a serious Home Assistant user who wants a stable, versatile coordinator with room to grow, it is an easy recommendation; newcomers should expect some setup effort.
- Home Assistant power users
- Ethernet or PoE coordinator placement
- Running Zigbee plus Thread/Matter
- Upgrading from a Zigbee-only SLZB-06
Pros
- Flexible connectivity: Ethernet, USB, Wi-Fi and PoE for easy placement
- Dual radios run Zigbee plus Thread and Matter
- Stable and set-and-forget once configured, with reliable routing
- Easy OpenThread (OTBR) flashing from Home Assistant
- Works with both ZHA and Zigbee2MQTT
- A clear upgrade path from the Zigbee-only SLZB-06
Cons
- Not plug-and-play; a genuine learning curve for newcomers
- Documentation is a bit sparse
- Some units need occasional reboots or don't rejoin cleanly after a Home Assistant reboot
- Fiddly power and a tight USB-C case tolerance on some units
- Seen by some as slightly overpriced
Who is the SLZB-MR1 for?
This is a universal, multi-radio Zigbee 3.0 coordinator that connects over Ethernet, USB, Wi-Fi or PoE, aimed at Home Assistant users who want more flexibility than a plain USB stick. It has dual radios, so it can run Zigbee alongside Thread and Matter, works with ZHA and Zigbee2MQTT, and can act as a Bluetooth proxy. It best suits Home Assistant power users, people who want to place the coordinator over Ethernet or PoE away from their server, those who want Zigbee plus Thread/Matter in one unit, and owners upgrading from a Zigbee-only SLZB-06. If you want a simple, plug-and-play coordinator and are new to Zigbee, be aware there is a learning curve.
What buyers love
The biggest draws are flexibility and stability. Ethernet, USB, Wi-Fi and PoE options let owners place it wherever the network needs it rather than next to the server, which several call a big deal once a Zigbee network grows beyond a handful of devices, and running it over Ethernet with PoE has been stable and predictable. Once configured, owners describe it as set-and-forget: Home Assistant recognizes it, devices pair quickly, routing is reliable, and they avoid the dropouts and rejoin issues seen with cheaper dongles. The dual-radio design is a highlight, letting owners run Zigbee plus Thread/Matter and switch between ZHA and Zigbee2MQTT or split radios for different roles, and it flashes easily to OpenThread, with one owner connecting it to Home Assistant's OTBR add-on and having it work the first time via a one or two click firmware option. Many buy it as an upgrade from the Zigbee-only SLZB-06 and appreciate the room to grow. It also works quietly in awkward spots like an attic, and pairs well with a separate Z-Wave stick for a full setup.
What to know before you buy
This is not a plug-and-play device, and owners say so plainly. There is a real learning curve (more about Zigbee and Home Assistant than the hardware itself), documentation is a bit sparse, and newcomers lean on YouTube guides to get going. A few owners report the unit occasionally cutting out and needing a reboot (which can be automated in Home Assistant), and a couple note the Zigbee network does not always restart cleanly after a Home Assistant reboot, something they did not see on the older SLZB-06, though they suspect their own setup may play a part. Powering it reliably can be fiddly, and one owner almost returned it over a poorly toleranced USB-C case where a sub-millimeter cable fit caused dropouts (fixed by using a cable with more of the connector exposed). One buyer could not get it working at all and returned it, and another felt it was slightly overpriced. Once it is configured properly, though, owners consistently say it just works.
Is the SLZB-MR1 worth it?
For a serious Home Assistant user who wants a stable, flexible coordinator with room to grow, the SMLIGHT SLZB-MR1 is an easy recommendation. Its Ethernet, USB, Wi-Fi and PoE options make placement far easier, its dual radios handle Zigbee plus Thread and Matter, and once configured it is reliable and set-and-forget, with straightforward OpenThread flashing from Home Assistant. The trade-offs are real: it is not plug-and-play, documentation is sparse, there is a learning curve, and a minority hit power, USB-C fit, or post-reboot rejoin quirks. Buy it if you are comfortable with some setup effort and want a versatile, future-proof coordinator; if you want the simplest possible plug-in-and-go experience, a basic USB dongle will be less work.
Frequently asked questions
How is it different from a USB dongle like the SLZB-06?
The MR1 is a universal coordinator that connects over Ethernet, USB, Wi-Fi or PoE, so you can place it away from your server for better Zigbee coverage, and it has dual radios to run Zigbee plus Thread and Matter. Many owners buy it as an upgrade from the Zigbee-only SLZB-06 specifically for that flexibility.
Is it easy to set up?
Not entirely. Owners are clear that it is not a plug-and-play toy: there is a learning curve (mostly about Zigbee and Home Assistant), and documentation is a bit sparse, so newcomers often lean on YouTube guides. Once it is configured properly, however, owners say it just works and runs reliably.
Can it run Thread and Matter?
Yes. Its dual radios let it run Zigbee alongside Thread and Matter. Owners report flashing it to OpenThread and connecting it to Home Assistant's OTBR add-on easily, with a one or two click firmware option, and having it work the first time.
Are there any reliability quirks?
A few. Some owners report the unit occasionally needing a reboot (which can be automated in Home Assistant), and a couple note the Zigbee network not always restarting cleanly after a Home Assistant reboot. One also flagged a tight USB-C case tolerance causing dropouts until they used a cable with more of the connector exposed.
How does it connect and power?
It supports Ethernet, USB and Wi-Fi, and can be powered over USB or PoE. Owners favor Ethernet with PoE for the most stable, predictable operation and flexible placement, though a couple found getting reliable power a bit fiddly at first.
