SMLIGHT SLZB-MR1U is a modular, multi-protocol LAN adapter that enables central control of Zigbee, Thread and even Z-Wave (using a USB dongle) systems from a single device connected to Ethernet. With the built-in USB passthrough function over TCP/IP, the connected USB dongle (e.g. Z-Wave, other USB-UART device) can be accessed via the network as a remote serial port - as if it were plugged directly into the server.

MR1U offers PoE-capable Ethernet connection, Wi-Fi/Bluetooth access, USB-C power supply and USB-A host port. It uses TI CC2652P as Zigbee coordinator, EFR32MG21 as Thread Border Router, and ESP32 provides network and management functions. Ideal choice for Home Assistant, Zigbee2MQTT and advanced, future-proof installations.

Main product features

- Multi-protocol operation: Zigbee 3.0 (CC2652P), Thread Border Router (EFR32MG21); Additional radios (e.g. Z-Wave) can be connected via USB host.
- USB-passthrough on Ethernet: USB radios (e.g. Z-Wave stick) can be accessed over a network via TCP/IP (remote serial access).
- Wide USB-UART compatibility: CP210x, PL2303, CH340/CH341, CH9102 chipsets are supported.
- Flexible connection: LAN + PoE for stable power supply/network, Wi-Fi for flexible placement, USB-C as an alternative power supply, USB-A for host expansion.
- Plug&Play SLZB-OS: built-in web interface, easy setup and commissioning.
- Platform compatibility: Home Assistant (Zigbee: ZHA / Zigbee2MQTT), OpenThread, Z-Wave JS (with USB passthrough).

Smart home protocols and platform compatibility

- Supported protocols (built-in): Zigbee 3.0; Thread Border Router.
- Expandability via USB: Z-Wave, Matter/BLE or other USB-UART based radios with USB passthrough.
- Compatible platforms: Home Assistant (ZHA, Zigbee2MQTT, Z-Wave JS TCP), OpenThread and other Zigbee/Thread/Z-Wave ecosystems.
- Communication: Ethernet (PoE), Wi-Fi, Bluetooth (setting/maintenance).

Smart functions

- USB device network access: the connected USB dongle can be accessed based on IP:Port (TCP) as if it were a local USB port.
- Web interface: enable USB passthrough, radio/mode settings, network parameters.
- PoE power supply with USB host: when using PoE, the connected USB device(s) can be powered (device dependent).

Technical specifications

Radio chips:

- Texas Instruments CC2652P7: Zigbee 3.0 support (Zigbee2MQTT & ZHA compatible); Thread (Matter-over-Thread) support (OpenThread Border Router); ideal for Zigbee networks, also works great with Thread; +20 dBm transmitter power with built-in PA; 144 KB + 8 KB RAM, 704 KB Flash.
- Silicon Labs EFR32MG21: Zigbee 3.0 support (Zigbee2MQTT & ZHA compatible); Thread (Matter-over-Thread) support (OpenThread Border Router); ideal for Thread networks, also works great with Zigbee; +20 dBm transmitter power; 96 kB RAM, 1024 kB Flash.

Supported protocols:

- Simultaneously with Zigbee 3.0 (Zigbee2MQTT, ZHA) Thread.
- Thread (Matter-over-Thread) simultaneously with Zigbee.
- Simultaneous or switchable operation for the joint use of several radios.
- Wi-Fi.
- Other protocols with external USB sticks.

Connection:

- USB-C data power supply.
- Ethernet connection.
- USB-C passthrough.

Firmware:

- Radio firmware support: compatible with TI Z-Stack (for CC2652P7) and Silicon Labs Ember/EZSP stack (for EFR32MG21).
- Radio firmware update via web interface.
- SLZB-OS: compatible with SLZB-OS 2.9.7 and later versions.
- SLZB-OS features: VPN, 20+ languages, scripts, network settings, security, dashboard, zHub mode, mode switch, OTA firmware updates, etc.

Antenna:

- Two external antenna SMA sockets (one for each radio SoC).
- PCB antenna for Wi-Fi and Bluetooth.
- 2 × pre-packaged high-gain 2.4GHz antenna included.

Power supply:

- PoE 48 V supported.
- USB-C (5 V DC) power supply.
- Low consumption: up to ~1.5 W (when both radio SoCs are active).
- Attention: It cannot be powered from USB-C and PoE at the same time! Use only one power source at a time.

House:

- Compact, durable ABS casing with ventilation.
- DIN rail and wall mounting compatible (3D models).
- Simple gluing with double-sided adhesive tape.
- Easy screw assembly; screws, screwdriver, ruler included in the package.

LED indicators and peripherals:

- Independent status LEDs for each radio (total of 6 service LEDs: 2 × Core SoC, 2 × CC2652P SoC, 2 × EFR32 SoC).
- Multi-button: support for multiple functions (mode switching, reset, etc.).