The Sonoff Dongle‑PMG24 – officially named “Zigbee/Thread USB Dongle Plus MG24” – is one of Sonoff’s most advanced USB dongle solutions, offering exceptional performance and versatility. Powered by a high-performance EFR32MG24 SoC with 1536 KB Flash and 256 KB RAM, it provides significantly more resources compared to previous models. This enables faster automation response times and more stable sub-device management.

The device comes pre-flashed with Zigbee coordinator firmware but can be easily reflashed into other roles using the SONOFF Dongle Flasher web tool – such as a Zigbee router, OpenThread RCP, or even a MultiPAN device – all in under one minute. The package includes a 1 m USB extension cable, allowing flexible placement and reduced interference.

Its aluminum alloy casing is durable, corrosion-resistant, and pressure-resistant, offering a sleek and modern appearance. The built-in 3 dBi antenna can be optimized up to 4.5 dBi, enabling a range of up to 200 meters in open space. This dongle is an excellent choice for advanced DIY smart home developers and power users seeking a reliable, high-performance multi-protocol controller.

Main Product Features

• Chip and memory – EFR32MG24 SoC with 1536 KB Flash and 256 KB RAM
• Antenna and range – built-in 3 dBi antenna, optimized up to 4.5 dBi, with up to 200 m open-air range
• Firmware upgrade – change device roles (Zigbee router, OpenThread RCP, MultiPAN) within 1 minute using the Dongle Flasher web tool
• USB extension – 1 m cable included to minimize interference and allow flexible placement
• Robust enclosure – aluminum alloy housing, pressure- and corrosion-resistant with a modern design 

Smart Home Protocols and Platform Compatibility

• Protocol support – Zigbee 3.0; upgradable to OpenThread (RCP) and MultiPAN firmware
• Remote control / data transmission – Zigbee-based; usable as a protocol layer interface
• Supported platforms – compatible with Home Assistant, Zigbee2MQTT, openHAB, Domoticz, ioBroker, jeedom, and more
• Cloud services – no native cloud support, optimized for local control environments
• Voice control – accessible via supported platforms like Home Assistant using Alexa, Google Assistant, or Siri 

Smart Functions

• Firmware role switching – functions as a Zigbee coordinator, router, Thread Border Router, or MultiPAN device
• Local control – operates independently without requiring cloud connection
• Scalability – powerful SoC supports managing a large number of devices
• Stable connectivity – strong antenna, extension cable, and robust casing ensure reliable operation 

Other Features

• Plug & Play and DIY-ready – pre-flashed as a coordinator, easily customizable with alternative firmware
• Compact size – USB form factor with aluminum enclosure; USB extension included for convenient positioning
• Strong community support – extensive developer and user communities available (e.g. Sonoff Academy)
• Modern design – next-generation chip and antenna design for high stability and performance
• Power supply – USB 5 V, max. 500 mA
• Power consumption (standby) – only 40 mW
• Output power – up to 20 dBi antenna gain, built-in 3 dBi, optimizable up to 4.5 dBi