Catalog > Internet of Things (IOT) Related Products > Itead Studio Compact USB Dongle Dongle SONOFF DONGLE-LMG21 ZIGBEE/T USB A Compact USB Dongle with ZIGBEE 3.0/Openthread Support, EFR32MG21 Chip, Enabling Reliable Local Smart-Home Control on Home Assistant or ZIGBEE2MQTT. 495.65 ZAR inc for 1 Each 23 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The SONOFF Dongle-LMG21 (Dongle Lite MG21) is a compact USB Zigbee 3.0 coordinator that lets you create fast, reliable local control with Home Assistant, Zigbee2MQTT, openHAB, and other platforms. Built on the EFR32MG21 radio, the hardware provides a stable Zigbee mesh network, allowing bulbs, switches, and sensors from different brands to be paired and controlled within a single system. The dongle works in a Plug&Play manner on Windows, Ubuntu, and Raspberry Pi OS (including Docker environments), and its external, ≤180° adjustable antenna delivers better range. For advanced users, flashable firmware is available (Zigbee NCP/Router, OpenThread RCP, MultiPAN), enabling configuration for multiple network roles as needed. A cost-effective entry-/mid-tier solution for building your own Zigbee network with DIY-focused community support. Ideal as the backbone of small to medium smart homes. Features Compact Zigbee coordinator: build a stable Zigbee 3.0 mesh network with cross-brand device pairing. Wide platform support: works with Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, and Jeedom. Plug&Play setup: quick commissioning on Windows, Ubuntu, Raspberry Pi OS, and in Docker environments. Flashable firmware: Zigbee NCP/Router, OpenThread RCP, and MultiPAN modes for advanced configurations. External antenna: ≤180° adjustable for improved signal strength and range. Smart Home Protocols and Platform Compatibility Supported protocols: Zigbee 3.0 (default); in advanced mode OpenThread RCP / MultiPAN (depending on firmware). Compatible platforms: Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, Jeedom. Local control: manage paired Zigbee devices over LAN without the cloud. Operating systems: Windows, Ubuntu, Raspberry Pi OS; also usable with Docker. Smart Features Create a Zigbee mesh: build a stable, scalable network with your own coordinator and unify devices. Cross-brand device management: integrate bulbs, switches, and sensors from various manufacturers. Advanced modes: with firmware swap, set up Router/RCP/MultiPAN modes for specialized use cases. Specifications Power supply: 5 V⎓ / 500 mA (via USB) Enclosure: PC+ABS housing. External antenna: adjustable, ≤180°. DIY focus: community guides available for advanced features (e.g., firmware flashing). Model: SONOFF Dongle-LMG21 (Dongle Lite MG21) SoC / radio: Silicon Labs EFR32MG21 Protocol: Zigbee 3.0 (flashable: Zigbee NCP/Router, OpenThread RCP, MultiPAN) Compatibility: Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, Jeedom OS support: Windows, Ubuntu, Raspberry Pi OS; Docker Power: 5 V⎓ / 500 mA (USB) Dimensions: 133 × 18.6 × 10.1 mm Operating temperature: 10–60 °C Humidity: 5–95% RH Note: Thread/MultiPAN features require a firmware update; setup is recommended for advanced users.