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SMLIGHT SLZB-MR3U Zigbee & Thread Coordinator | Ethernet & USB | CC2674P10 + EFR32MG24
Compatible with




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SMLIGHT SLZB-MR3U Zigbee & Matter Coordinator (LAN | USB | Wi-Fi)
Future-proof your smart home with native Zigbee and Thread support in one compact unit. The SLZB‑MR3U features dual-chip architecture, PoE/Ethernet or USB connectivity, and seamless compatibility with Zigbee2MQTT, ZHA, and Matter.
Introducing the SLZB‑MR3U — the latest addition to SMLIGHT’s MultiRadio series. With robust dual-radio capability, this model integrates both the Texas Instruments CC2674P10 and Silicon Labs EFR32MG24 chips. Enjoy full duplex compatibility with Zigbee 3.0, Thread, and Matter, all in a single device.
Why Choose SLZB‑MR3U?
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Cutting-edge dual chipset: CC2674P10 + EFR32MG24 for high power (+20 dBm TX), Zigbee and Thread support
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Multi‑ecosystem ready: Smooth integration with Zigbee2MQTT, Home Assistant ZHA, and Matter-over-Thread
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Flexible connectivity & power: Use Ethernet with PoE, or USB‑C for data/power
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Built to last: Durable ABS casing, DIN‑rail/wall/adhesive mounting options, and optically isolated USB/Ethernet ports
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OTA firmware updates: Update Zigbee and ESP32 systems easily via web interface—no physical access needed
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User‑friendly features: 6 status LEDs, a mode-switch button, ESP32 autoboot for streamlined flashing
Key Features:
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Dual-radio support (Zigbee + Thread concurrently)
Zigbee 3.0, Thread (Matter) compatibility - Connectivity: Ethernet + PoE, USB‑C
- Advanced chipsets: CC2674P10 & EFR32MG24, both +20 dBm power
- Mounting versatility: Wall, DIN‑rail, or 3M tape
- OTA updates and remote mode switching
- Multi‑LED indicators, mode button, and autoboot for developers
Whether you're building a Zigbee mesh, experimenting with Thread-based devices, or diving into Matter, the SLZB-MR3U offers best-in-class performance, connectivity, and freedom — all in one compact powerhouse.
Compatible with all major smart home ecosystems:
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Works with Home Assistant
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Works with Zigbee2MQTT
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Works with ZHA
Key Features
Dual-Radio Support – Zigbee and Thread at the Same Time
Thanks to the advanced capabilities of the EFR32MG24, the SLZB-MR3U can operate both Zigbee and Thread protocols simultaneously, allowing for mixed-network environments and future-proof integration with Matter devices without sacrificing your existing Zigbee network.
Multi-Mode Connectivity
Use LAN, USB, or Wi-Fi depending on your preferred setup. Flexibility to suit both hobbyist and professional installations.
Power Options: PoE or USB
Power the device with either Power-over-Ethernet (PoE) or micro-USB. A micro-USB to USB-C adapter is included for maximum compatibility.
Pre-Flashed and Ready to Use
No need to flash firmware. It’s pre-configured for use with Home Assistant, Zigbee2MQTT, or ZHA, and supports automatic OTA (Over-The-Air) firmware updates for both Zigbee and core components.
High-Performance Hardware
Equipped with a +20 dBm amplifier and 5 dBi antenna for extended range and network reliability.
Secure Networking
Includes VPN tunneling support with Home Assistant, a secure password-protected web interface, and built-in whitelist firewall functionality.
Multi-Coordinator Support
Use multiple SLZB-MR_ devices across buildings or larger properties. Integrates smoothly with Zigbee2MQTT and Home Assistant for distributed and scalable smart home networks.
Multi-Language Interface
Web-based interface with support for 15 languages.
LED Status Indicator
Onboard LED for diagnostics and visual feedback, with control options.
Compact and Discreet Design
Just 106 x 22 x 24 mm – small enough to tuck behind panels or blend into your setup.
What’s Included
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1x SMLIGHT SLZB-MR3U Zigbee/Matter Coordinator
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2x 5 dBi External Antenna
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1x Micro-USB to USB-C Adapter
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1x Quick Start Guide with QR Code
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2x Adhesive Mounting Pads
The SLZB-MR3U is the ideal choice for anyone building a modern smart home. With dual-protocol support, future-ready Matter integration, and robust connectivity options, it’s a serious tool for users who want total control over their setup.
We dispatch all orders quickly and securely from the United Kingdom.
United Kingdom
FREE Standard Delivery
- Royal Mail Next Day – £2.50
- DPD Next Day – £7.50
Orders are typically dispatched within 1 working day.
Next-day services apply to orders placed before the daily cut-off time.
European Union
- Standard International – £4.00
Estimated delivery: 2–11 business days
International (Rest of World)
- Standard International – £9.00
Estimated delivery: 3–17 business days
Returns
We offer a straightforward returns policy for your peace of mind.
Returns are accepted within 30 days of delivery.
Items must be unused and in their original packaging.
Customers are responsible for return postage unless the item is faulty or incorrect.
If you need to arrange a return, please contact our support team with your order number and reason for return, and we will provide instructions.
Zigbee technology offers several advantages for smart home enthusiasts:
Interoperability: Zigbee devices from different manufacturers can communicate with each other, giving you more options when building your smart home ecosystem.
Low Power Consumption: Zigbee devices are designed to be energy-efficient, helping you reduce your carbon footprint and save on energy costs.
Local Control: With Zigbee, your smart home data stays local, ensuring privacy and security without relying on cloud services.
At ZigbeeSmart, we're committed to providing top-quality Zigbee products and exceptional customer service. With our easy-to-use website, secure payment options, and fast shipping, you can shop with confidence and start enjoying the benefits of a smarter home in no time.
The compatibility logos displayed alongside this product indicate the smart home platforms and ecosystems it has been tested to work with.
At Zigbee Smart, we independently test every product we sell to confirm reliable pairing, stable connectivity, and correct feature support within the listed platforms. We do not rely solely on manufacturer claims — each compatibility badge reflects real-world verification by our team.
If a platform logo appears next to this product, it means:
The device has been successfully integrated and tested
Core features operate as expected within that system
The product meets our performance standards
Please note that compatibility may depend on hub models, firmware versions, and platform updates. For best results, ensure your system is running the latest software.
If you’re unsure whether this device will work with your setup, our team is always happy to help.