Smlight - USB Ethernet POE Zigbee and Thread Adapter SLZB-MR2

Smlight SLZB-MR2: Dual Zigbee and Thread Coordinator Dongle

The SLZB-MR2 from SMLIGHT is a compact, high-performance Zigbee and Thread (Matter-over-Thread) coordinator designed for modern smart home automation. Equipped with the Texas Instruments CC2652P and Silicon Labs EFR32MG21 chipsets, it supports simultaneous or switchable operation of both Zigbee and Thread protocols, ensuring full compatibility with Zigbee2MQTT, ZHA, and Open Thread Border Router.

Offering USB-C and Ethernet connectivity, PoE support, and pre-flashed SLZB-OS firmware, the SLZB-MR2 is ideal for reliable and secure automation setups. It features optimized dual antennas, a ventilated ABS enclosure, and advanced management through a secure web dashboard.

Main Features

• Dual radio operation: Zigbee and Thread (Matter-over-Thread)
• Simultaneous or switchable mode between Zigbee and Thread
• Full compatibility with Zigbee2MQTT, ZHA, and Open Thread Border Router
• USB-C and Ethernet for power and data connectivity
• Power via USB-C (5V DC) or PoE (48V, 802.3af standard)
• Firmware updates through intuitive web interface
• Native firmware support: TI Z-Stack and SL Ember/EZSP
• SLZB-OS 2.8.7+ features: OTA, VPN, dashboard, scripts, multi-language UI
• Advanced security: VPN, encrypted communication, network control
• Dedicated LEDs for each SoC to indicate radio status and activity
• Compact ABS housing with ventilation, DIN rail and wall mount support
• Multifunction button: reset, mode switch, more

Technical Specifications

• Radio Chips:
  • Texas Instruments CC2652P: +20 dBm output, Zigbee & Thread support
  • Silicon Labs EFR32MG21: +20 dBm output, Zigbee & Thread support
• Supported Protocols: Zigbee 3.0 (Zigbee2MQTT, ZHA), Thread (Matter-over-Thread)
• Connectivity: USB-C for data/power, Ethernet (LAN)
• Other Interfaces: Wi-Fi, Bluetooth (internal PCB antenna)
• Firmware Support:
  • TI Z-Stack for CC2652P
  • SL Ember/EZSP for EFR32MG21
  • SLZB-OS (version 2.8.7 and up)
• Firmware Features via SLZB-OS: VPN, scripting, dashboard, OTA, security, zHub mode, multi-language UI
• Antennas:
  • 2x external 2.4 GHz antennas (SMA female, included)
  • Internal PCB antenna for Wi-Fi/Bluetooth
• Power Supply: USB-C (5V DC) or PoE (48V)
• Power Consumption: Max 1.5W with both radios active
• Housing: Compact ABS with ventilation, DIN rail and wall mount compatible
• Accessories Included: Screws, screwdriver, ruler, double-sided adhesive
• LED Indicators: 6 total — 2 for each SoC + 2 for main controller
• Button: Multifunction (reset, mode switch)