SLZB-MR1U Zigbee+Thread Ethernet PoE USB LAN WIFI Adapter

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

The MR1U offers PoE-capable Ethernet, Wi-Fi/Bluetooth, USB-C power and a USB-A host port. It uses a TI CC2652P radio as a Zigbee coordinator and an EFR32MG21 radio as a Thread Border Router, while an ESP32 handles networking and management. It is an ideal choice for Home Assistant, Zigbee2MQTT and advanced, future-proof installations.

About SMLIGHT

SMLIGHT develops multi-protocol Zigbee/Thread/Z-Wave gateways and LAN/PoE adapters for DIY and professional smart home users. Their products focus on stable, local (cloud-independent) control and flexible integration with open ecosystems such as Home Assistant, Zigbee2MQTT and OpenThread.

Key Features

• Multi-protocol operation: Zigbee 3.0 (CC2652P) and Thread Border Router (EFR32MG21); additional radios (e.g., Z-Wave) can be attached via the USB host.
• USB passthrough over Ethernet: expose USB radios (e.g., Z-Wave stick) over TCP/IP for remote serial access.
• Broad USB-UART compatibility: supports CP210x, PL2303, CH340/CH341, CH9102 chipsets.
• Flexible connectivity: LAN + PoE for stable power/network, Wi-Fi for flexible placement, USB-C as alternative power, USB-A host for expansion.
• PlugPlay SLZB-OS: built-in web interface for easy setup and commissioning.
• Platform compatibility: Home Assistant (Zigbee: ZHA / Zigbee2MQTT), OpenThread, Z-Wave JS (via USB passthrough).

Smart Home Protocols and Platform Compatibility

• Built-in protocols: Zigbee 3.0; Thread Border Router.
• USB expandability: Z-Wave, Matter/BLE or other USB-UART radios via 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 (for setup/maintenance).

Smart Functions

• Network access to USB devices: the attached USB dongle is reachable by IP:Port (TCP) as if it were a local USB port.
• Web interface: enable USB passthrough, configure radio/modes and network parameters.
• PoE with USB host: when powered via PoE, the connected USB device(s) can be powered as well (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 TX 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 TX power; 96 kB RAM, 1024 kB Flash.

Supported protocols:

• Zigbee 3.0 (Zigbee2MQTT, ZHA) — simultaneously with Thread.
• Thread (Matter-over-Thread) — simultaneously with Zigbee.
• Simultaneous or switchable operation for multi-radio environments.
• Wi-Fi.
• Other protocols via external USB sticks.

Connectivity:

• USB-C for data and power.
• 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 updates via web interface.
• SLZB-OS: compatible with SLZB-OS versions 2.9.7 and up.
• SLZB-OS features: VPN, 20+ languages, scripts, network settings, security, dashboard, zHub mode, mode switcher, OTA firmware updates, etc.

Antenna:

• Dual external antenna SMA female connectors (one per radio SoC).
• PCB antenna for Wi-Fi and Bluetooth.
• Includes 2 × high-gain 2.4 GHz antennas.

Power supply:

• PoE powered, 48 V PoE supported.
• Powered via USB-C (5 V DC).
• Low power consumption up to ~1.5 W (with both radio SoCs running).
• Caution: Do not power via Type-C and PoE at the same time. Use only one power source.

Enclosure:

• Compact, durable ABS case with ventilation.
• DIN-rail and wall-mount compatible (3D models available).
• Easy sticking with double-sided adhesive tapes.
• Easy screw mounting; package may include screws, screwdriver, ruler.

LED indicators and peripherals:

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