SMLIGHT SLZB-MR4U - Modular Zigbee coordinator + Thread (CC2674P10 + EFR32MG26) + USB over Ethernet

Introduction

The SMLIGHT SLZB-MR4U is a new-generation USB Ethernet PoE multi-radio adapter, designed to offer maximum compatibility and total flexibility for managing home automation networks. Equipped with the powerful Texas Instruments CC2674P10 and Silicon Labs EFR32MG26 chipsets, it combines Zigbee 3.0 and Thread (Matter-over-Thread) in a single device. This solution makes it possible to build an open, scalable home automation environment independent of proprietary solutions, while guaranteeing exceptional stability and range.

It builds on the solid foundations of the SLZB-MR4U, adding a unique feature: USB device pass-through via Ethernet. This modular device makes it possible to connect and access remote USB devices, such as Z-Wave dongles or custom modules, via the local network, offering unprecedented flexibility for advanced home automation installations. Connect your Z-Wave dongle to the SLZB-MR4U's USB port and control today's most popular wireless protocols directly via TCP.

Thanks to its advanced connectivity(USB-C, Ethernet and 48V PoE), high-performance antennas, intuitive web interface and multiple configuration options, the SLZB-MR4 meets the needs of home automation enthusiasts and professional integrators alike. Pre-flashed and ready to use, it is compatible with Zigbee2MQTT and ZHA, and can be used in coordinator or router mode.

Key features

• Multi-radio support: Zigbee 3.0 and Thread (Matter-over-Thread) simultaneously.
• Full compatibility with Zigbee2MQTT and ZHA.
• USB-to-Ethernet pass-through for connecting and accessing remote USB devices via TCP/IP.
• Can be used as a coordinator or router, depending on configuration.
• Flexible connection: Ethernet, USB-C or 48V PoE (low power consumption, max. 1.5W).
• Simplefirmware updates via web interface.
• SLZB-OS: advanced management (integrated VPN, scripting, multilingual, OTA, dashboard).
• External +5 dB antennas for extended, stable range.
• Convenient interface: 6 status LEDs + multifunction button (mode, reset, switch).
• Flexible installation: wall-mounted, DIN rail, adhesive or screw-mounted.
• Factory pre-flashed: ready for immediate use.

Technical specifications

• Reference: SLZB-MR4
• Chipset
  • Texas Instruments CC2674P10 (+20 dBm, integrated PA, Zigbee & Thread)
  • Silicon Labs EFR32MG26 (+20 dBm, Zigbee & Thread)
• Supported protocols
  • Zigbee 3.0(Zigbee2MQTT & ZHA)
  • Thread(Matter-over-Thread)
  • Wi-Fi & Bluetooth via integrated ESP32
• Connectivity
  • Ethernet with PoE (48V) for a stable connection.
  • Integrated Wi-Fi and Bluetooth via ESP32.
  • USB-C for alternative power supply.
  • USB-A host port for expansion with USB peripherals.
• Power supply: PoE 802.3af or USB-C 5V DC (low power consumption, max. 1.5W).
• Antennas
  • 2 external high-performance SMA antennas (2.4 GHz)
  • Internal PCB antenna for Wi-Fi/Bluetooth
• Firmware: TI Z-Stack (CC2674P10) and SL Ember/EZSP (EFR32MG26) compatible. Updates via OTA or web interface.
• Indicators: 6 independent LEDs (main SoC, CC2674P10, EFR32MG26) + multifunction button.
• Housing: durable, ventilated ABS, compact. Wall, DIN rail or adhesive mounting.
• Compatibility
  • Zigbee2MQTT
  • ZHA (Home Assistant)
  • Open Thread Border Router (Matter-over-Thread)
  • Support for open ecosystems (Home Assistant, Jeedom, Domoticz...)