SMLIGHT SLZB-06MU – Zigbee Ethernet PoE Coordinator for Home Assistant

The standalone Zigbee Coordinator that adapts to your installation

The SMLIGHT SLZB-06MU is one of the most popular standalone Zigbee coordinators in the Home Assistant community. While USB dongles are connected to your server, the SLZB-06MU is completely independent of your network via Ethernet, Wi-Fi, or USB – powered by a single cable thanks to PoE (IEEE 802.3af, 48V) . Mount it centrally in the meter cupboard, on the ceiling, or in the hallway for optimal Zigbee coverage, completely independent of your Home Assistant server.

The SLZB-06MU is the USB passthrough variant of the SLZB-06M – the same proven Silicon Labs EFR32MG21 chip (ARM Cortex-M33 @ 80MHz, 96KB SRAM) with +20 dBm signal gain and an external +5 dBi antenna . You can manage firmware, connection mode, MQTT, WireGuard VPN, and Bluetooth Proxy via the SLZB-OS web dashboard at slzb-06m.local

💡 Already using a USB dongle like the ZBDongle-E ? The SLZB-06MU is the ideal upgrade to a standalone Ethernet coordinator. Easily migrate via the built-in Zigbee2MQTT or ZHA backup function; no need to re-pair your Zigbee devices.

✅ Key Features & Benefits

• EFR32MG21 chip (Silicon Labs) – ARM Cortex-M33 @ 80MHz, 96KB SRAM; proven stable Zigbee 3.0 radio
• +20 dBm signal gain – Combined with the +5 dBi external antenna for strong range through walls and floors
• USB passthrough (MU) – Direct USB connection as an additional connection option in addition to Ethernet and WiFi
• 3 connection modes – Ethernet (RJ45), WiFi 2.4GHz and USB-C; directly switchable via button or web dashboard
• Power over Ethernet (PoE) – IEEE 802.3af, 48V; one network cable for power and data
• Matter over Thread – One-Click Firmware Switch to Thread Border Router
• Bluetooth Proxy – Supported via SLZB-OS; Bluetooth devices are forwarded to Home Assistant
• WireGuard VPN – Secure remote management; ideal for remote installations
• SLZB-OS web dashboard – Firmware, mode, MQTT, VPN via browser at slzb-06m.local
• OTA updates – One-click update for Zigbee and ESP32 core firmware
• Plug-and-play – Native Home Assistant integration with auto-discovery for ZHA and Zigbee2MQTT
• Completely local – No cloud, no subscription; all communication within your home network
• Server Independent – ​​Replace your Home Assistant server without re-pairing Zigbee devices

🔀 Connection modes

🔌 Compatibility

📊 SMLIGHT SLZB-06 Family – Which One Is Right for You?

📊 SMLIGHT SLZB-06MU vs. SONOFF Dongle Max

🏠 Practical Example: Central Zigbee coverage with remote management

1. Centrally mount the SLZB-06MU using a single PoE network cable – power and data in one.
2. Home Assistant automatically detects the coordinator via the network.
3. Configure Zigbee2MQTT or ZHA using the TCP connection information from the web dashboard.
4. Activate WireGuard VPN for secure management when you're away from home.
5. Connect a new Zigbee device remotely via VPN – just as if you were at home.

⚙️ Technical Specifications

⚠️ Points of attention

• EFR32MG21 (not MG24) – For a newer chip with more memory, the SONOFF Dongle Max with EFR32MG24 is an alternative
• No Standalone Hub Mode – Hub mode is only available on TI-chip models (SLZB-06, 06P7); not on the EFR32MG21-based MU
• Thread over Ethernet limitations – Thread may experience slight latency over Ethernet; Thread is most stable over USB
• No simultaneous Zigbee + Thread – Combine with a second dongle for both protocols simultaneously
• WiFi only 2.4 GHz – 5 GHz networks are not supported
• Operating temperature max. +40°C – Take care when installing in heated server cabinets
• Homey not compatible – Homey has built-in Zigbee radio and does not support external coordinators

❓ Frequently Asked Questions (FAQ)

What is the difference between the SLZB-06M and the SLZB-06MU?

The SLZB-06MU adds USB passthrough to the SLZB-06M. This allows you to connect the coordinator directly to your server as a USB drive. All other hardware and features are identical.

What is the difference between the SLZB-06 and the SLZB-06MU?

The SLZB-06 uses a Texas Instruments CC2652P chip and supports standalone hub mode. The SLZB-06MU uses a Silicon Labs EFR32MG21 chip – better for ZHA and Thread/Matter – but hub mode is not available on EFR32 models.

Can I replace my server without re-pairing Zigbee devices?

Yes. The SLZB-06MU functions as a standalone network coordinator, separate from your Home Assistant server. Replacing or reinstalling the server will not affect your Zigbee devices.

Does the Bluetooth Proxy work by default?

The ESP32 chip supports Bluetooth Proxy via SLZB-OS. Enable this feature in the web dashboard, and Home Assistant will automatically recognize the SLZB-06MU as a Bluetooth proxy.

How do I set up WireGuard VPN?

Configure WireGuard VPN via the SLZB-OS web dashboard at slzb-06m.local This allows you to securely access your Zigbee network remotely, even when you're not at home.

Does the SLZB-06MU work with Zigbee2MQTT and ZHA?

Yes, completely. Both integrations are officially supported. The web dashboard displays the TCP connection information immediately after deployment.

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