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.
• Plug&Play 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.).

At the link below, you can access our sales support materials for individual products.
Available documents are organized by manufacturer in folders on Google Drive.

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