§ Series · Ethernet single-radio · Zigbee · Thread · Matter

SLZB-06xU.
One body. Six radio brains.

Name: SLZB-06Mg24U
Brand: SMLIGHT

SMLIGHT's flagship Ethernet Zigbee coordinator. Pre-flashed, PoE-ready, with a one-click switch between Zigbee coordinator, router, and Matter-over-Thread border router. Six SoC picks across TI and Silicon Labs.

Current model

SLZB-06Mg24U

Radio SoC

EFR32MG24

Availability

In stock

Where to buy Compare all six →

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160 × 24 × 28 mm · 86 gENGINEERED · UA + CN

§ SELECT MODELEverything identical except the radio SoC

§ 01 / Why 06xU

Six variants. One hardware philosophy.

Same body.
Same ports. Same firmware.

Ethernet-first by design

LAN is the headline. Wi-Fi is there as a fallback. One Cat6 drop delivers data and power — anywhere the mesh needs to live.

Zigbee OR Thread — your choice

One-click switch in the web UI between Zigbee coordinator, Zigbee router, and Matter-over-Thread border router. No reflashing cable, no toolchain.

PoE, USB-C, or both

802.3af PoE (48V) or USB-C 5V. Both can be connected at once — optoelectronic isolation keeps them safely separate.

Gallery

See it up close.

11 photos
Tap to enlarge

§ 02 / Chipsets

The only thing that changes between variants.

Radio SoC.
Pick by network, not by body.

RADIO SOC

EFR32MG24

Silicon Labs

Zigbee / Thread

ANTENNA · +5 dB · rotatable L-I

MODE

Zigbee / Thread

One-click switch

Coordinator · Router · Border Router

SET VIA SLZB-OS WEB UI

Radio SoC

Vendor

Capabilities

Year

Current pick?

CC2652P

Zigbee 3.0 · Thread · mainstream

2020

—

CC2652P7

Zigbee 3.0 · Thread 1.3 · +20 dBm · extended

2023

—

CC2674P10

Zigbee 3.0 · Thread 1.3 · +20 dBm · extended RAM

2024

—

EFR32MG21

Silicon Labs

Zigbee 3.0 · Thread · +20 dBm

2019

—

EFR32MG24

Silicon Labs

Zigbee 3.0 · Thread 1.3 · AI/ML accelerator

2022

● IN 06Mg24U

EFR32MG26

Silicon Labs

Zigbee 3.0 · Thread 1.4 · 2× RAM vs MG24

2025

—

Shared across every variant

ESP32-S3

Core · 2× 240 MHz

Runs SLZB-OS. Handles the radio, USB passthrough, web UI, OTA updates.

W5500

Ethernet · WIZnet

Hardwired 10/100 Mb Ethernet SoC — the PHY that keeps the network link deterministic.

PoE Xfmr

SMLIGHT 5V

Isolated PoE transformer — 802.3af (48V). Delivers clean power while keeping USB-C-side circuitry separated.

§ 03 / Functions

What this thing actually does.

12 capabilities
organized by layer

CORE

Zigbee Adapter

Coordinator or Router. Compatible with Zigbee2MQTT and ZHA.

CORE

Thread Adapter

Matter-over-Thread. One-click switch between Zigbee and Thread.

CORE

USB Passthrough

Plug any CP210x / CH340 / CH9102 dongle into the 06U and expose it over the network.

I/O

LAN · Wi-Fi · USB · PoE

Network over Ethernet, Wi-Fi, or USB. Power via USB-C or PoE.

FIRMWARE

Pre-flashed

Ships ready. Plug and play — no flashing cable, no toolchain.

FIRMWARE

ESPHome

Swap to ESPHome via the built-in web flasher if you need custom YAML.

FIRMWARE

SLZB-OS

WireGuard · DDNS · OTA · Zigbee Hub · USB Passthrough · OTBR.

FIRMWARE

Web-UI auth on by default. Not an exposed service.

HARDWARE

Rotatable +5 dB antenna

L-I-shaped external antenna. 3-axis positioning for best signal.

HARDWARE

4 LEDs + button

Visual feedback for power, link, radio state. One physical button for mode control.

HARDWARE

DIY pinouts

Limited debug pinouts exposed for ESP32-S3 and the radio SoC.

CORE

OTBR ready

Silicon Labs variants focus on Matter-over-Thread border-router duties via SLZB-OS + OTBR.

§ 04 / Firmware · SLZB-OS

Ships with SLZB-OS. Swap at any time.

Local-first.
Community-welcomed.

SLZB-OS

The official operating system running on the ESP32-S3 core. Ships pre-flashed and tested on every SLZB-06Mg24U.

Web UI — setup, configuration, one-click firmware updates
Zigbee Coordinator, Zigbee Router, and Matter-over-Thread border-router roles
Home Assistant integration — ZHA, Zigbee2MQTT, and SMLIGHT's native HA integration
WireGuard VPN · DDNS · PoE control · debug logging · hardware diagnostics
One-click reflash to ESPHome / Bluetooth-Proxy firmware / community builds, and back

ESPHome

For DIY geeks. Basic adapter functionality, YAML-configurable.

Bluetooth Proxy

ESPHome-based BLE proxy firmware — relay Bluetooth signals to Home Assistant over the network.

Open-source core

SMLIGHT also publishes a lighter open-source core FW — a starting point for customization and community contributions.

§ 05 / Updates & Recovery

Never requires a flashing cable.

Everything OTA.
Everything recoverable.

Remote radio update

Flash the radio SoC firmware remotely through the web UI. No physical access required.

Remote core update

SLZB-OS updates over-the-air. Click to deploy. Full control wherever you are.

Reset function

Quickly restore the device if something goes wrong during setup, update, or configuration.

Ethernet support

DIY-enthusiast friendly: limited pinouts exposed for both the ESP32-S3 and the radio SoC.

§ 06 / Topology

Put it anywhere. Run it from anywhere.

Ethernet means location-free.
VPN means globe-free.

With the Ethernet-enabled SLZB-06xU, run your Zigbee or Matter-over-Thread mesh anywhere — without tying the coordinator to your Home Assistant, openHAB, or HomeSeer server. Remote, across buildings, or on different sides of the globe. One smart network, unlimited range.

§ 07 / Compare

Six variants. Side by side.

Click a column
to switch variant

Radio SoC

CC2652P

CC2652P7

CC2674P10

EFR32MG21

EFR32MG24

EFR32MG26

Radio vendor

Texas Instruments

Silicon Labs

Positioning

MAINSTREAM

EXTENDED

RECOMMENDED

SILABS

MG24

PREMIUM

Zigbee Hub mode¹

● YES

—

Availability

In stock — ships in 48h

In stock

Pre-order — ships Apr 2026

Everything else

ESP32-S3 core · W5500 Ethernet · PoE 802.3af · USB-C · Type-C passthrough · rotatable +5 dB antenna · 4 LEDs · button · 160×24×28 mm · 86 g · SLZB-OS

¹ Zigbee Hub mode lets you pair and control Zigbee devices straight from the SLZB's own web page — no Home Assistant, Zigbee2MQTT or other server required. Think of it as a tiny, built-in version of Zigbee2MQTT / ZHA running on the device itself: ideal for small setups and basic control. For bigger networks, pair it with Home Assistant or Zigbee2MQTT instead.

Not sure which to pick?

You want the default, mainstream pick

You want extended TI range with Thread 1.3

You want the latest TI chip & most RAM

You're on the Silicon Labs stack (entry)

You want Silabs w/ AI/ML accelerator

You want top-shelf Silabs, future-proof

§ 08 / Electrical diagram

How the SLZB-06Mg24U is wired.

Schematic-level.
Block diagram.

§ 09 / In the box

What you actually unbox.

180 × 25 × 40 mm
105 g packed

SLZB-06Mg24U device

160 × 24 × 28 mm · 86 g

External antenna

L-I · +5 dB · rotatable · 192 × 12 × 12 mm · 15 g

Mount kit

2× screws · 2× adhesive pads

Hex wrench

For the mount-kit screws — fix the device anywhere

QR-code manual card

Scan for the complete online manual.

Ruler

Stickered scale for placement planning.

§ 10 / Full specifications

Every number. Every port.

Same body.
Radio changes per variant.

Radio chip

EFR32MG24 (Silicon Labs)

Core chip

ESP32-S3 Espressif

Ethernet

W5500 WIZnet

USB-to-Ethernet passthrough

Yes

Antenna (Zigbee / Thread)

L-I-shaped +5 dB Baishi

Antenna (Wi-Fi / Bluetooth)

On-PCB, +2 dB

PoE Transformer

SMLIGHT 5V

§ 12 / FAQ

12 questions. Straight answers.

From SMLIGHT docs
+ community forums

The SLZB-06Mg24U is a smart-home adapter — a bridge between your Zigbee or Thread devices and your smart-home system, Home Assistant and the like. Think of it as the middleman that helps your smart lights, sensors and switches talk to your hub. It supports Ethernet, USB, Wi-Fi and PoE, and ships pre-configured and ready to use.

§ 13 / Video reviews

Independent reviewers. Actual installs.

12 videos
Page 1/4 · auto-rotate

14:22

SLZB-MR1U Review — the new mainstream Zigbee coordinator

Digiblur·38k subs

89k views·Mar 2026

22:08

I replaced 3 Zigbee dongles with one SLZB-MR3U — here's what happened

SmartHomeScene·72k subs

156k views·Feb 2026

31:47

Multi-radio deep dive: MR1U vs MR3U vs MR5U side-by-side

ModernHouse·24k subs

62k views·Apr 2026

Refreshes every 8s · See all on YouTube →

§ 14 / Owner feedback

12 owners. In their own words.

Rotating
every 9s

🇺🇸MR1U★★★★★

Swapped from a CC2652P dongle to the MR1U for the Ethernet + PoE combo. Put it in the basement wiring closet where my mesh was weakest — and suddenly the whole top floor came alive again.

u/basement_rack_robr/homeassistant·Apr 2026

🇺🇸MR3U★★★★★

Running MR3U as a dedicated Matter-over-Thread border router alongside my existing Zigbee coordinator. The dual-radio split lets me keep both networks on their optimal channels. Setup took 10 minutes.

matter_mesh_miker/MatterProtocol·Mar 2026

🇩🇪MR5U★★★★★

MR5U with twin MG24s is a dream for my standardization — one toolchain, one set of firmware builds, one debugging workflow. Silicon Labs only. Beautiful.

@embedded_ericSMLIGHT #developers·Feb 2026

12 quotes · Submit yours →

§ 15 / Useful links