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Ethernet Coordinator Series · Zigbee · Thread · SLZB-OS · SMLIGHT
SLZB-06xU.
Six radio chip options.
SLZB-06xU — an SMLIGHT Ethernet adapter that connects your Zigbee or Thread network to your local network via cable, PoE, or Wi-Fi. It acts as a coordinator or router for a smart home — an intermediary between your Zigbee/Thread devices (lights, sensors, switches) and a server such as Home Assistant.
The series consists of six models with the same enclosure and firmware — only the radio chip inside differs. Below, we first explain what the device does, and then which model to choose.
What it does
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Zigbee coordinator or router
Manages your Zigbee network directly (coordinator mode) or extends its coverage (router mode). Compatible with Zigbee2MQTT and ZHA.
|
Thread border router
The same device, switched to Thread/Matter mode with one click — serves your Matter-over-Thread network.
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USB devices over the network
Additionally: a USB device connected to it (Z-Wave, BLE, 4G modem) becomes available over the network — just like the built-in radio chip.
|
|
Power — PoE, USB-C, or both simultaneously
PoE 802.3af (48V) or USB-C (5V). Both power sources can be connected simultaneously — the input is optically isolated, so they do not interfere with each other.
|
||
Compatibility
Tested and verified
| Zigbee | Zigbee2MQTT, ZHA — coordinator or router mode. |
| Thread / Matter | Matter-over-Thread border router via OTBR, switched with one click from Zigbee mode. |
| Bluetooth | BLE Proxy for Home Assistant — simultaneously with Zigbee/Thread, without reflashing. |
| USB Passthrough | Z-Wave dongles, BLE modules, 4G modems, and other devices based on CP2102 / CH340 / CDC\_ACM. |
| Servers | Home Assistant (native SMLIGHT integration), Z-Wave JS UI, openHAB, HomeSeer. |
Choose a model
Everything is identical except the radio chip
| Model | SLZB-06U MAINSTREAM |
SLZB-06P7U EXTENDED |
SLZB-06P10U RECOMMENDED |
SLZB-06MU SILABS |
SLZB-06Mg24U MG24 |
SLZB-06Mg26U PREMIUM |
| Radio chip | CC2652P | CC2652P7 | CC2674P10 | EFR32MG21 | EFR32MG24 | EFR32MG26 |
| Vendor | Texas Instruments | Silicon Labs | ||||
How to get started
|
01
Connect power and network
Ethernet cable (with or without PoE) or USB-C. Both can be connected simultaneously.
|
02
Choose a mode in the web interface
Zigbee coordinator, Zigbee router, or Matter-over-Thread border router — no flashing cable or toolchain required.
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03
Connect to the server
Copy the device's network address into Home Assistant, Zigbee2MQTT, or ZHA.
|
Key hardware features
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ESP32-S3 core + PSRAM
Dual-core controller running SLZB-OS, networking, USB host, and web interface.
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Ethernet W5500
10/100 Mbps hardware TCP/IP controller from WIZnet — stable connection without interference.
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+5 dB swivel antenna
External L-shaped antenna with 3-axis adjustment for the best signal.
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4 LEDs + button
Visual indication of power, connection, and mode. One button for switching modes.
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USB-C power
5V power supplied separately from the passthrough port, with optical isolation from PoE.
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Compact enclosure
160 × 24 × 28 mm, wall mounting with screws or double-sided tape.
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Unique feature for coordinators
USB Passthrough — a second USB device over the network
SLZB-06xU has a dedicated USB host port that exposes not only the built-in radio chip over the network, but also any external USB device connected to it. This is a rare feature among Zigbee/Thread coordinators — most devices on the market provide network access only to their own built-in radio.
Connect a Z-Wave dongle, BLE module, or another USB-serial device (based on CP2102, CH340, or CDC\_ACM chips) to the USB port of SLZB-06xU — and it will become available over the network via TCP/IP, just like the built-in coordinator.
Limitation: only one external USB device can operate through passthrough at a time.
Software
|
Bluetooth Proxy — simultaneously with Zigbee/Thread
New in the U series: thanks to PSRAM, the device works as a BLE proxy for Home Assistant simultaneously with the main radio, without reflashing to a separate ESPHome build.
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Zigbee Hub mode
Direct control of Zigbee devices through the web interface, without a separate server. Available on SLZB-06U, 06P7U, and 06P10U (Texas Instruments chips).
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OTA updates
Update the radio chip firmware and SLZB-OS over the network with one click.
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WireGuard VPN + DDNS
Secure remote access to the device, even if your provider changes the IP address.
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ESPHome support
Switch to ESPHome through the built-in web flasher and back, without a flashing cable.
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Multilingual interface
Convenient web interface in multiple languages and LED indication control.
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4G modem operation
Via USB Passthrough
For locations without wired internet or Wi-Fi, the SLZB-06xU coordinator can be connected to mobile internet via SMLIGHT USB-Extender, if the modem antenna needs to be placed separately.
The 4G modem connects through the USB host passthrough port, so it occupies the only available passthrough channel — another external USB device (Z-Wave, BLE, etc.) cannot be connected simultaneously with the 4G modem. Together with WireGuard VPN, this provides a fully autonomous, remotely accessible smart home gateway where there is no wired internet.
Important — read before ordering
Zigbee Hub mode — only on TI chips
SLZB-06U, SLZB-06P7U, and SLZB-06P10U support Zigbee Hub mode. This function is not available on Silicon Labs models (06MU, 06Mg24U, 06Mg26U).
USB Passthrough — one device at a time
Only one external USB device (Z-Wave, BLE module, or 4G modem) can be connected through the USB host simultaneously.
The exception is devices based on the CP2102 radio chip, they support connecting up to 2 USB devices!
Ideal for
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Placing the coordinator away from the server via Ethernet network.
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Matter-over-Thread border router alongside an existing Zigbee network.
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Protocol expansion via USB passthrough — Z-Wave, BLE, or 4G without separate devices.
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Technical specifications
| Type | Ethernet Zigbee/Thread coordinator, series with 6 chip options |
| Radio chip | CC2652P / CC2652P7 / CC2674P10 / EFR32MG21 / EFR32MG24 / EFR32MG26 — depending on the model (see table above) |
| Controller | ESP32-S3, 2 cores × 240 MHz, with PSRAM |
| Ethernet | W5500 (WIZnet), 10/100 Mbps |
| USB | USB host for passthrough of one external device + USB-C power |
| Power | PoE 802.3af (48V) or USB-C (5V), can be used simultaneously |
| Antenna | External, +5 dB, swivel (L-shaped) |
| Firmware | SLZB-OS · WireGuard · DDNS · OTA · Bluetooth Proxy · multilingual web interface · ESPHome |
| Dimensions / weight | 160 x 24 x 28 mm · 86 g |
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