MODBUS EFR32MG21 ZigBee 3.0 USB Wireless Module - Home Assistant Zigbee Gateway Core

Product Overview

MODBUS EFR32MG21It is a ZigBee 3.0 USB wireless communication module based on Silicon Labs EFR32MG21 chip, used as the Zigbee Coordinator for Home Assistant. By inserting the USB port of the HA host and integrating with Zigbee 2MQTT or ZHA (Zigbee Home Automation), a Zigbee network can be established to connect and manage various Zigbee smart devices.

Zigbee 3.0 Standard

Zigbee 3.0 is a unified standard of the Zigbee Alliance, which is backward compatible with old standards such as Zigbee Home Automation (ZHA) and Zigbee Light Link (ZLL). The EFR32MG21 chip supports all features of Zigbee 3.0:

• Network building: automatic creation and management of Zigbee Mesh networks
• Device networking: supports Touchlink, Find&Bind and other networking methods
• Low power consumption: Sleepy End Devices support
• Security encryption: AES-128 network layer encryption

HA integration method

Two mainstream integration solutions:

• Zigbee 2MQTT: The most powerful feature, supports the most devices, and has an active community. After flashing the Zigbee 2MQTT firmware into the USB module, use
• ZHA (built-in integration): HA is officially built-in, plug and play, and does not require additional installation. Suitable for users who do not want to tinker

Support device types

Compatible with the vast majority of Zigbee 3.0 devices on the market: smart switches/sockets, human body sensors, door magnets, temperature and humidity sensors, smoke alarms, smart door locks, electric curtain motors, LED bulbs/strips, scene switches, etc.

Technical specifications

• Chip: Silicon Labs EFR32MG21 (ARM Cortex-M33)
• Protocol: Zigbee 3.0/Zigbee PRO
• Frequency: 2.4GHz
• Interface: USB 2.0 Type-A
• Transmission distance: 30-50 meters indoors (in case of visual impairment)
• Maximum number of sub devices: 200+(depending on the number of routing nodes)

🛒 Purchase and Consultation

The MODBUS products introduced in this article can be purchased through official channels.

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