Sonoff Zigbee/Thread USB Dongle | Dongle Plus MG24

The SONOFF Zigbee/Thread USB Dongle Plus MG24 is a professional-grade smart home gateway coordinator designed for maximum range, local reliability, and future-proof expansion. Powered by the high-performance Silicon Labs EFR32MG24 chipset, it features a massive +20dBm maximum output power coupled with an external SMA omnidirectional antenna to penetrate the toughest architectural walls. Optimized for local open-source automation servers like Home Assistant, Zigbee2MQTT, and openHAB, it enables completely local, cloud-free smart home execution. Out of the box, it provides a stable foundation for standard Zigbee 3.0 setups while natively supporting upcoming multi-protocol Thread and Matter routing infrastructures.

Overview:

The SONOFF Zigbee/Thread USB Dongle Plus MG24 represents the pinnacle of localized USB coordinator gateways. Enclosed in a rugged, heat-dissipating aluminum alloy housing, it effectively shields against RF interference while maintaining structural durability. Built around the powerful EFR32MG24 multi-protocol wireless SoC, this hardware easily addresses crowded networks by handling up to 32 direct child devices or expanding across over 200 distributed mesh routing nodes. The hardware includes a built-in USB Type-A interface for easy plug-and-play installation on Raspberry Pi, x86 mini PCs, or custom home servers. By routing smart sensors, switches, and lighting completely locally, it guarantees instant response times and uninterrupted home automation functionality—even when your home's internet connection goes completely offline.

Features:

• Silicon Labs EFR32MG24 Powerhouse: Premium enterprise-grade chipset architecture offers large computing headroom and high radio frequency sensitivity.
• Extreme +20dBm Output Range: High output power capabilities expand signal boundaries, establishing reliable connections with deep-set outdoor or indoor smart nodes.
• Multi-Protocol Future Alignment: Operates natively on standard Zigbee 3.0 profiles, with full physical hardware compliance for multiPAN Thread border routing and Matter ecosystems.
• Local Cloud-Free Automation: Bypasses restrictive external cloud servers to integrate directly with open-source systems like Home Assistant (ZHA/Zigbee2MQTT), openHAB, and ioBroker.
• Rugged Aluminum Casing: CNC-finished aluminum alloy structure isolates internal components from surrounding USB 3.0 electrical noise while maximizing 24/7 passive cooling.
• Adjustable High-Gain SMA Antenna: Bundled external omnidirectional antenna guarantees strong 360-degree wireless propagation and signal coverage.
• Dual-Role Firmware Flexibility: Shipped pre-flashed with standard coordinator firmware, but can be flashed over USB to act as a powerful mesh router/repeater to expand network scale.
• Hardware-Level Security: Built-in AES-128 encryption protection ensures that all wireless smart home device traffic remains entirely secure and private.

Specification:

• Model / MPN: ZBDongle-E / MG24 Version
• Product Name: SONOFF Zigbee/Thread USB Dongle Plus MG24
• Core Wireless MCU: Silicon Labs EFR32MG24 (IEEE 802.15.4 standard)
• Interface Connection Type: Standard USB Type-A Male
• Max Transmit Power Output: +20dBm
• External Antenna Connection: SMA Female (Includes matching omnidirectional high-gain antenna)
• Direct Sub-Device Limit: Supports up to 32 direct child devices (Expandable beyond 200 via routing nodes)
• Casing Materials: Premium Aluminum Alloy + ABS
• Operating Temperature Bounds: -10°C to 40°C
• Platform Compatibility: Home Assistant (ZHA & Zigbee2MQTT), openHAB, ioBroker, Windows, Linux, macOS

Package includes:

• 1 x SONOFF Zigbee/Thread USB Dongle Plus MG24
• 1 x External High-Gain SMA Omnidirectional Antenna
• 1 x Quick Reference Setup Guide

Unlock Complete Multi-Protocol Smart Home Synergy

Bridge the gap between today's smart tech and tomorrow's upcoming mesh environments. The Dongle Plus MG24 supports native Zigbee 3.0 setups while featuring the physical multiPAN radio framework required to deploy advanced Thread border routing. This establishes a future-proof local baseline ready for incoming local Matter components.

*Note: Thread/Matter border routing requires open-source environment initialization configurations on your host server software.

Flagship Silicon Labs EFR32MG24 Compute Power

— Engineered to handle expanding networks with high-tier efficiency. Driven by the premium Silicon Labs EFR32MG24 system-on-chip, this professional USB coordinator processes wireless commands with lightning-fast local execution, managing multiple active sub-device pools without computational bottlenecks.

Ultimate Signal Domination with +20dBm Transmission

- Push your smart network boundaries further than ever. Featuring an aggressive +20dBm maximum hardware transmission power, the Dongle Plus MG24 drives signals through tough walls, concrete floors, and long hallways, eliminating dropping signals across distant nodes.

Local Open-Source Execution with Zero Cloud Reliance

Take absolute, uncompromised control over your private automation data. This high-performance gateway links directly with major local software environments like Home Assistant (ZHA / Zigbee2MQTT), openHAB, and ioBroker. Triggers process straight on your host hardware, securing data locally and keeping automations online even when the internet goes out.

Industrial Aluminum Shielding Against USB 3.0 Interference

Engineered to bypass performance drops caused by neighboring hardware noise. The dongle is encased in a CNC-machined, high-strength aluminum alloy shell that physically blocks electromagnetic interference from nearby USB 3.0 ports, while providing continuous passive cooling for the internal chip.

Flexible Dual-Mode Network Tuning Options

Adapt your hardware structure instantly as your mesh network scales. Shipped out-of-the-box as an executive local network Coordinator, you can easily flash the device with standard router firmware to transform it into a specialized, mains-powered signal repeater that extends coverage throughout your home.