SONOFF Dongle-LMG21 in Home Assistant
Hubs & gateways · Zigbee · Dongle Lite Zigbee MG21 (EFR32MG21) with router firmware
Zigbee device – see the note above on what ZHA needs for it.
Facts about this device
- Brand
- SONOFF
- Model
- Dongle-LMG21
- Device type
- Hubs & gateways
- Radio
- Zigbee
- Power
- Mains powered
- Reports itself as
- Dongle-LMG21_ZBRouter
- Zigbee2MQTT
- Device page on zigbee2mqtt.io
How the device gets into Home Assistant
- official ZHA – with a Zigbee coordinator and the ZHA integration; for all its functions it needs a custom quirk, see above.
- add-on Zigbee2MQTT – Zigbee2MQTT runs as an add-on and passes the device on to Home Assistant over MQTT.
ZHA quirks for this device
Quirk proposed, not merged yet Recommended quirk
Proposed to ZHA and waiting for review – the maintainers check it before it becomes part of Home Assistant.
Source:
zha-device-handlers · pull request #5325 · by @csstup · September 11, 2026
Signature: SONOFF / Dongle-LMG21_ZBRouter
Sources: Zigbee2MQTT, ZHA quirks, Z-Wave JS, the Matter certification database, Shelly, ESPHome, Tasmota, Tuya Local and the issue trackers on GitHub. Reports are assigned to a device by the identifiers they contain; the sentences come from the integration pages, where a language model writes them from the titles.