SONOFF Zigbee/Thread USB Dongle Lite MG21
SONOFF Zigbee/Thread USB Dongle Lite MG21
SONOFF Zigbee/Thread USB Dongle Lite MG21
Build a flexible local smart home with the SONOFF Dongle Lite MG21, a compact USB coordinator based on the Silicon Labs EFR32MG21 chipset. It is designed for compatible open-source smart home platforms including Home Assistant, Zigbee2MQTT, and openHAB.
Flexible Zigbee Smart Home Connectivity
The Dongle Lite MG21 can operate as a Zigbee coordinator for compatible smart home systems, allowing compatible Zigbee lights, sensors, switches, plugs, and other devices to be managed locally through your selected platform.
Compact EFR32MG21 Design
Powered by the EFR32MG21, the MG21 provides a compact hardware option for USB-based Zigbee setups. SONOFF states that the Dongle Lite MG21 is approximately 65% smaller than the ZBDongle-E, making it convenient for space-limited USB installations.
Wide Platform Compatibility
- Home Assistant
- Zigbee2MQTT
- openHAB
- Other compatible open-source smart home platforms
Flexible Firmware Options
The MG21 can be flashed with supported firmware for different roles, including Zigbee Coordinator, Zigbee Router, OpenThread RCP, and MultiPAN RCP. Thread functionality requires the appropriate supported firmware and configuration; the factory coordinator firmware is intended for Zigbee operation.
Adjustable Antenna and USB Extension
The adjustable antenna helps with flexible positioning, while the included 0.5 m USB extension cable makes it easier to position the dongle away from the host device and nearby USB 3.0 ports.
Specifications
| Model | Dongle-LMG21 |
|---|---|
| Chipset | Silicon Labs EFR32MG21 |
| Wireless Standard | IEEE 802.15.4 |
| Zigbee | Zigbee 3.0 |
| Input | 5V DC, 500mA |
| Working Temperature | -10°C to 60°C |
| Casing Materials | Aluminium, PC+ABS |
| Antenna | Adjustable |
| USB Extension | 0.5 m included |
Package Contents
- SONOFF Dongle Lite MG21
- 0.5 m USB extension cable
- Quick guide
- Packaging box
Important Compatibility Note
Actual compatibility depends on the host device, operating system, smart home platform, firmware, and Zigbee devices being used. Check the current platform-specific documentation before installation.
Frequently Asked Questions
What is the SONOFF Dongle Lite MG21?
It is a compact USB Zigbee coordinator based on the EFR32MG21 chipset for compatible local smart home platforms.
Does it work with Home Assistant?
Yes. SONOFF provides documentation for using the Dongle Lite MG21 with Home Assistant ZHA.
Does it work with Zigbee2MQTT?
Yes. SONOFF lists Zigbee2MQTT among the supported platforms.
Can it be used with Thread?
Yes, with appropriate supported OpenThread RCP or MultiPAN RCP firmware and configuration. Thread is not the default factory operating mode.
- EFR32MG21; IEEE 802.15.4; Zigbee 3.0; 5V DC 500mA; -10°C to 60°C; Aluminium, PC+ABS; adjustable antenna; 0.5m USB extension cable
Shipping & Returns
Processing time
Orders are processed within 1–3 business days (Monday to Friday, excluding public holidays). Processing time begins on the day you place your order.
Shipping Rates
| Service | Rate |
|---|---|
| Standard Shipping | $10 flat rate |
| Express Shipping | $15 flat rate |
| Expedited Dispatch | From $20, calculated at checkout |
| Free Standard Shipping | Orders over $129 (AU & NZ) |
International rates calculated at checkout.
Expedited Dispatch
Order before 2pm AEST Mon–Fri for same day dispatch via Express shipping. Orders placed after 2pm or on weekends dispatch next business day.
Returns
30-day return window from date of delivery. Items must be unused and in original packaging. Contact us to initiate a return — return address provided upon approval.
Warranty
All Dialedin products carry a 12-month warranty against manufacturing defects and failure. Consumables excluded.
For full details see our Shipping Policy and Return and Refund Policy
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