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ITead's “Sonoff Zigbee 3.0 USB Dongle Plus” model “ZBDongle-E” based on Silicon Labs EFR32MG21 +20dBm radio MCU now sold for $19.99 · Koenkk zigbee2mqtt · Discussion #13373 · GitHub
ITEAD Zigbee 3.0 dongle powered by Silicon Labs EFR32MG21 wireless MCU Sells for $6.99