SMLIGHT SLZB-MR4U Dual-Radio Zigbee & Thread PoE | Home Assistant

One coordinator, two networks: Zigbee AND Thread simultaneously

Until now, you had to choose: either your Zigbee coordinator or a Thread Border Router for Matter. The SMLIGHT SLZB-MR4U makes that choice redundant. With two independent radio chips: CC2674P10 (TI) for Zigbee and EFR32MG26 (SL) for Thread, this adapter runs both networks simultaneously. Via a single Ethernet connection, with PoE.

⚡ Benefits and features

• CC2674P10 (TI, 296kB RAM) as Zigbee coordinator: proven stable in large networks
• EFR32MG26 (SL, 512kB RAM) as Thread Border Router: native Matter support
• Simultaneous dual-radio operation: Zigbee AND Thread simultaneously, completely independent
• 2x 5dBi external antennas for maximum range
• Ethernet 100 Mbps + PoE 802.3af 48V: one cable, neat installation
• USB Passthrough: Z-Wave or BLE dongle available over the network
• 6 independent status LEDs + multi-function button
• SLZB-OS: web interface with OTA, WireGuard VPN, scripting, MQTT, 20+ languages
• Delivered pre-programmed — ready for immediate use

🏠 Home Assistant integration

Add the CC2674P10 as a Zigbee coordinator via Zigbee2MQTT or ZHA. Configure EFR32MG26 as an OpenThread Border Router for Matter devices. Both radios active from one SLZB-OS interface. USB Passthrough for Z-Wave or BLE dongles without additional hardware.

🔧 Automation example

250 existing Zigbee devices AND new Thread via Matter devices? You connect the SLZB-MR4U via PoE wherever it suits you: Zigbee2MQTT runs via the CC2674P10, Thread Border Router via the EFR32MG26. Your Matter door lock connects via Thread while your Zigbee sensors continue to work via this same dongle. No extra adapters, no compromises.

📦 Installation

1. Connect to your network via Ethernet or PoE
2. Open SLZB-OS web interface at the adapter's IP address
3. Zigbee2MQTT: add CC2674P10 via socket://IP-address:6638
4. ZHA: select 'other adapter', enter IP and port
5. Thread/Matter: activate OpenThread Border Router for EFR32MG26 in SLZB-OS
6. USB Passthrough (optional): connect and activate dongle via SLZB-OS

✅ Pros / ❌ Cons

• ✅ Only adapter: Zigbee AND Thread simultaneously independent
• ✅ Two top chips: CC2674P10 (TI) + EFR32MG26 (SL)
• ✅ Scales up to ~750 Zigbee devices
• ✅ Native Matter via Thread
• ✅ USB Passthrough for Z-Wave/BLE
• ❌ Higher price than single-radio models
• ❌ Larger size (160mm)
• ❌ Overkill if you only need Zigbee

❓ Frequently asked questions

Difference with SLZB-06 series?
The SLZB-06 series has one radio: Zigbee OR Thread. The MR4U has two independent chips and runs both simultaneously.

Two Zigbee2MQTT instances?
Yes. Both radios are independently accessible.

USB Passthrough with PoE power supply?
Yes. The USB dongle receives power from the MR4U's USB port, even with PoE.

Can I use the adapter remotely?
Yes. Via WireGuard VPN in SLZB-OS, you can connect it to a HA server in another building or over the internet.

📊 Compare all SMLIGHT models

📐 Specifications

✅ slimhuisje.nl delivers the SMLIGHT SLZB-MR4U directly from stock — the most powerful dual-radio coordinator model for serious smart home installations. Pre-programmed, plug & play ready.