SMLIGHT SLZB-MR4U Zigbee and Thread Coordinator PoE LAN Wi-Fi USB CC2674P EFR32MG26

SMLIGHT SLZB-MR4U Zigbee and Thread Coordinator PoE LAN Wi-Fi USB

The SMLIGHT SLZB-MR4U is a multi-protocol network gateway enabling simultaneous or flexible support for Zigbee 3.0 and Matter over Thread networks in home automation installations. The device is equipped with two independent radio chips, Texas Instruments CC2674P10 and Silicon Labs EFR32MG26, with a transmit power of up to +20 dBm and two external +5 dBi antennas. The coordinator connects to the host system via Ethernet (with PoE power), Wi-Fi wireless network, or directly via the USB interface.

Key features:

Dual radio path and high performance

The SLZB-MR4U model in the U version is designed for parallel operation with Zigbee and Thread protocols without performance compromises. The use of dedicated CC2674P10 and EFR32MG26 chips combined with radio stages with an output power of up to +20 dBm ensures stable coverage and high interference resistance in the 2,4 GHz band. Two independent, rotatable antennas with +5 dBi gain allow for optimal polarization tuning at the installation site.

U version improvements and USB-over-IP connectivity

The U version introduces hardware data flow control for both radio processors, which prevents packet loss during high traffic in complex mesh networks. In USB mode, both radio chips are visible in the operating system as separate serial ports. An additional USB-A port supports the USB passthrough (USB-over-IP) function, which allows connecting an external adapter (e.g., Z-Wave) and transmitting data directly via the LAN infrastructure.

Local control and SLZB-OS software

Device management is performed entirely locally via the built-in SLZB-OS system, without the need for external cloud services. The web interface allows for configuring network parameters, monitoring connection status, controlling the operation of 6 LEDs and RJ45 port LEDs, as well as changing the factory IEEE address. The built-in OTA manager allows updating the firmware of the radio modules and the main ESP32-S3 controller directly from the browser.

Technical specification

Kit contents

Frequently Asked Questions (FAQ)

• Can the SLZB-MR4U support Zigbee and Thread networks simultaneously?
  Yes, thanks to the presence of two independent radio chips (CC2674P10 and EFR32MG26), the device enables parallel operation in the Zigbee 3.0 and Matter over Thread standards without the need for software switching.
• How can the coordinator be powered?
  The device can be powered directly via the network cable using a PoE switch or injector compliant with the IEEE 802.3af (48 V) standard, or via a standard USB power adapter with a USB-C connector.
• Is a USB programmer required for software updates?
  No, the SLZB-OS system supports wireless OTA (Over-The-Air) updates. Firmware for the radio chips and the ESP32-S3 processor can be uploaded directly via the web browser panel.
• What is the USB-A port on the device used for?
  The USB-A port supports the USB passthrough (USB-over-IP) function. It allows connecting an additional USB adapter and forwarding its communication over the local network to the home automation server.
• What environments is the adapter compatible with?
  The coordinator operates based on open network communication standards and is designed to work with Home Assistant via ZHA or Zigbee2MQTT add-ons, as well as the OpenThread Border Router integration.