USB Zigbee Hub 3.0 / 2.4 GHz | 5V | Sonoff Dongle Lite MG21

Technical specifications:
Model: Sonoff Dongle Lite MG21
Chipset: EFR32MG21 (Silicon Labs)
Communication protocol: Zigbee IEEE 802.15.4
Power supply: 5V⎓500mA (via USB port)
Operating temperature: -10 °C … +60 °C
Material: Aluminum housing + PC/ABS plastic
Color: Dim Gray
Connector: USB Type-A
Compatibility: Home Assistant, openHAB, Zigbee2MQTT, ioBroker, Node-RED, etc.
Firmware update: via Dongle Flasher
Communication type: Zigbee 3.0 / 2.4 GHz

Functions and features:

Zigbee network coordinator: Acts as the main communication hub, connecting and managing multiple Zigbee devices – sensors, switches, relays, bulbs, etc.

High signal stability: The EFR32MG21 chip provides excellent receiver sensitivity, ensuring stable operation even with many devices.

Wide control compatibility: Fully supports Zigbee2MQTT, enabling the use of devices from different brands (Sonoff, Aqara, Philips Hue, IKEA, Tuya, etc.) in one ecosystem.

Local control (no cloud): Operates locally via a server (e.g., Raspberry Pi or mini PC), ensuring privacy and data security.

Easy installation: Simply plug into a USB port – no external power or complex setup required.

Thermal protection: Aluminum casing effectively dissipates heat, ensuring stable performance during intensive use.

Firmware flexibility: Supports firmware replacement (e.g., Zigbee Router mode) for wide customization – from simple coordinator to repeater.

Applications:

Home users: Smart control of lighting, doors, windows, or energy monitoring.

Engineers / automation specialists: For creating and integrating Zigbee networks in smart home systems.

Electricians: Enables installing control systems without additional hubs or expensive controllers.

Tech enthusiasts: For testing, experimenting, and developing personal Zigbee networks.

Pros:
✔ Wide compatibility with open-source platforms
✔ Easy to install and use
✔ Stable connection and wide signal range
✔ Compact and heat-resistant aluminum design
✔ Firmware updates supported
✔ Full local data control without cloud dependency

Cons:
✖ Requires basic knowledge of Home Assistant or Zigbee2MQTT setup
✖ USB positioning may be limited on laptops (USB extender recommended)
✖ Not suitable for outdoor use without additional protection