SMLIGHT SLZB-06 U Review: A PoE Zigbee Coordinator With USB-Over-Ethernet and a Three Year Warranty
The SLZB-06 U is SMLIGHT's LAN gateway built on the Texas Instruments CC2652P. It connects over Ethernet with PoE, USB or Wi-Fi, uses +20 dBm of transmit power and a +5 dB external antenna, and works as a Zigbee 3.0 coordinator, a Zigbee router and a Thread border router. USB-over-Ethernet lets another USB device be reached across the network as if it were plugged into the server, and Home Assistant and Zigbee2MQTT are both supported. It carries a three year warranty. The trade-offs are no dual network mode, no Z-Wave radio of its own and 2.4 GHz-only Wi-Fi.
- Zigbee2MQTT and Home Assistant setups
- Placing the coordinator away from the server
- PoE installations
- Thread border router use
Pros
- Texas Instruments CC2652P Zigbee 3.0 coordinator
- Ethernet with PoE, plus USB and Wi-Fi options
- USB-over-Ethernet for sharing another USB device
- +20 dBm amplifier with a +5 dB external antenna
- Works as Zigbee coordinator, Zigbee router and Thread border router
- Bluetooth proxy support
- Three year warranty
- Home Assistant and Zigbee2MQTT support
Cons
- No dual network mode, so Zigbee and Thread cannot run simultaneously
- No Z-Wave radio of its own, and no Matter bridging
- 2.4 GHz Wi-Fi only
Who is the SLZB-06 U for?
It is aimed at the self-hoster who wants the coordinator away from the server. Zigbee performance is decided by where the radio sits, and a PoE gateway can be mounted centrally on a single cable while Home Assistant stays wherever it lives. It is a compact 160 x 24 x 28 mm unit weighing 86 g, with Ethernet, USB and 2.4 GHz Wi-Fi as connection options, so it fits a rack, a shelf or a wall near the middle of the house.
What it offers
Beyond the usual Zigbee 3.0 coordinator and Zigbee router roles, it can act as a Thread border router for Matter accessories, and it supports a Bluetooth proxy. The +20 dBm amplifier and +5 dB external antenna give it reach for distant battery sensors. USB-over-Ethernet lets another USB device connected to the gateway become accessible over the network as though it were attached to the server itself, which is a neat way to relocate a second radio. Home Assistant and Zigbee2MQTT are both supported.
What to know before you buy
There is no dual network mode, so Zigbee and Thread are not served at the same time. It has no Z-Wave radio of its own, and it does not bridge Zigbee devices to Matter controllers. Wi-Fi is 2.4 GHz only, so a wired connection is the natural choice where PoE or Ethernet is available. The chip is a Texas Instruments CC2652P.
Is the SLZB-06 U worth it?
For a Zigbee2MQTT or Home Assistant user who wants the coordinator on the network rather than on a USB port, it is a well-equipped choice: PoE placement freedom, USB-over-Ethernet, a Thread border router and three years of warranty. If you need two networks at once or a built-in Z-Wave radio, a different model fits better.
Frequently asked questions
What does USB-over-Ethernet do?
It makes a USB device plugged into the gateway available over the network as if it were connected to your server, so a second radio can be relocated away from the machine.
Which chip does it use?
The Texas Instruments CC2652P, running Zigbee 3.0.
Does it work as a Thread border router?
Yes. It can act as a Thread border router, but it has no dual network mode, so it does not serve Zigbee and Thread at the same time.
Can it be powered over Ethernet?
Yes, PoE is supported, and it can also be powered over USB and connect by Wi-Fi.
How long is the warranty?
Three years.




