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-52%SKU: 1005010206202600

SONOFF Dongle Lite MG21 Zigbee/Thread USB Dongle-LMG21 EFR32MG21 Chip Wide Platform Compatibility Works With Zigbee2MQTT OpenHAB

Name: SONOFF Dongle Lite MG21 Zigbee/Thread USB Dongle-LMG21 EFR32MG21 Chip Wide Platform Compatibility Works With Zigbee2MQTT OpenHAB
Brand: SONOFF
SKU: 1005010206202600
Price: 23.9 USD
Availability: InStock
Rating: 38 (3 reviews)

Verified 4d ago

$23.90$49.80Save $25.90

$5 above 30-day low→ Stable

Expert Verdict

Sonoff Dongle Lite (LMG21) pairs an EFR32MG2x SoC with an adjustable high‑gain antenna and a USB extension cable; it reliably runs as a local Zigbee coordinator with Zigbee2MQTT/OpenHAB support and flashable firmware for Zigbee/Thread, but it's not pitched for very large multi‑router or advanced Thread deployments. Good pick for home automation hubs needing a compact, flashable coordinator; consider the Dongle Max if you need Ethernet or very large networks.

Best For

For DIY home‑automation users who need a compact, local Zigbee coordinator with flashable firmware; avoid if you need enterprise‑scale device counts or advanced Thread/Ethernet gateway features.

Price History

Expert Quality Score

38/ 100

Reviewed by 2 expert sources

low confidence

⚠️ Community Differs from Experts

Experts: 38 / 100 · Community: 0 / 100

Pros

+USB extension moves radio away from USB3 noise for more stable Zigbee links
+Adjustable high‑gain antenna improves indoor coverage when positioned optimally
+EFR32MG2x SoC and larger flash/RAM enable handling more devices and firmware images
+Works with local ecosystems: Home Assistant, Zigbee2MQTT and OpenHAB without cloud dependence

Cons

−Plugging the dongle directly into a noisy USB port can degrade radio performance
−Not ideal for very large deployments or advanced Thread setups; consider higher-tier units
−Advertised open‑space antenna range (140 m) is unrealistic for typical indoor environments

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