SMLIGHT SLZB-MR3U - Modular Zigbee coordinator + Thread (CC2674P10 + EFR32MG24) + USB over Ethernet

Introduction

The SLZB-MR3U is a new-generation Zigbee and Thread coordinator developed by SMLIGHT. It combines Texas Instruments CC2674P10 and Silicon Labs EFR32MG24 chips, enabling full compatibility with Zigbee2MQTT, ZHA and Matter-over-Thread.

It builds on the solid foundations of the SLZB-MR3U, adding a unique feature: USB device pass-through via Ethernet. This modular device enables remote USB devices, such as Z-Wave dongles or custom modules, to be connected and accessed via the local network, offering unprecedented flexibility for advanced home automation installations. Connect your Z-Wave dongle to the SLZB-MR3U's USB port and control today's most popular wireless protocols directly via TCP.

With its USB-C and Ethernet connectivity, it integrates easily into various home automation configurations. It supports Zigbee and Thread simultaneously or in dedicated mode.

Its compact housing, PoE or USB-C power supply and optimized antennas ensure flexible installation and efficient radio transmission.

Key features

• Dual Zigbee and Thread radio
• Simultaneous or switchable operation between Zigbee and Matter-over-Thread
• USB-to-Ethernet pass-through for connecting and accessing remote USB devices via TCP/IP.
• Compatible with Zigbee2MQTT, ZHA and OpenThread Border Router
• Advanced connectivity: USB-C for power and data, Ethernet port for fast, stable communication
• Easy updating and management: firmware updates via an intuitive web interface, native support for TI Z-Stack and Silicon Labs firmware
• Security and flexibility: VPN support, communication encryption, advanced network settings, accessible dashboard for managing connections and updates
• Robust, scalable design: compact, ventilated ABS case, wall and DIN rail mounting for easy integration
• Dedicated LED indicators: independent LEDs for each radio, clear display of connection and power status

Technical specifications

Radio chips :

• Texas Instruments CC2674P10
  • Zigbee 3.0 support (Zigbee2MQTT & ZHA compatible).
  • Thread (Matter-over-Thread) support (Open Thread Border Router).
  • Ideal for Zigbee networks, also works perfectly with Thread networks.
  • Transmission power of +20 dBm with integrated amplifier (PA).
  • 296 kB RAM, 1024 kB Flash memory.
• Silicon Labs EFR32MG24
  • Zigbee 3.0 support (Zigbee2MQTT & ZHA compatible).
  • Thread (Matter-over-Thread) support (Open Thread Border Router).
  • Ideal for Thread networks, also works perfectly with Zigbee networks.
  • Transmit power +20 dBm.

Supported protocols :

• Zigbee 3.0 (Zigbee2MQTT, ZHA), simultaneously with Thread.
• Thread (Matter-over-Thread), simultaneously with Zigbee.
• Support for simultaneous or switchable operation in multi-radio environments.
• Wi-Fi.
• Bluetooth.
• Ethernet.

Connectivity :

• Ethernet with PoE (48V) for stable connection.
• Integrated Wi-Fi and Bluetooth via ESP32.
• USB-C for alternative power supply.
• USB-A host port for expansion with USB peripherals.

Firmware :

• Radio firmware support
  • Compatible with TI Z-Stack (for CC2674P10).
  • Compatible with SL Ember/EZSP stack (for EFR32MG24).
• Radio firmware update via web interface.
• SLZB-OS: compatible with SLZB-OS versions 2.8.7 and above (not compatible with versions below 2.8.7).
• Features supported by SLZB-OS: VPN, over 20 languages, script support, network settings, security, dashboard, zHub mode, mode switch, OTA updates, etc.

Antenna :

• SMA female connectors for dual external antennas (one for each radio SoC).
• PCB antenna for Wi-Fi and Bluetooth.
• 2 high-performance 2.4 GHz antennas included.

Power supply:

• PoE powered, 48V POE compatible.
• Powered via USB-C (5V DC).
• Low power consumption down to 1.5W (if both radio SoCs are active).

Housing :

• Compact, robust ABS case with ventilation.
• DIN rail and wall-mount compatible (3D models available).
• Easy mounting with double-sided adhesive tape.
• Easy screw mounting with supplied kit (screws, screwdriver, ruler).

LED indicators and peripherals :

• Independent status LEDs for each radio (6 service LEDs in total: 2 LEDs for the main SoC, 2 for SoC CC2674P10, 2 for SoC EFR32MG24).
• Multifunction button: enables numerous actions (mode change, reset, etc.).