# Sonoff Zigbee 3.0 USB Dongle Plus E

> EFR32MG21-based Zigbee 3.0 USB coordinator dongle for Home Assistant and Zigbee2MQTT. A popular, reliable choice for building smart home Zigbee networks.

## Quick Facts

- **Brand:** Sonoff
- **Board Type:** usb-dongle
- **Price:** ~$29.9
- **Product Readiness:** consumer
- **CPU:** EFR32MG21
- **CPU Architecture:** ARM Cortex-M33
- **CPU Cores:** 1
- **RAM:** 256KB SRAM
- **Flash:** 1024KB
- **USB:** USB 2.0 Type-A
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Antenna:** SMA

## Connectivity

- **Zigbee:** Zigbee 3.0

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

zigbee2mqtt, zha, ember-znet

## Use Cases

- zigbee-gateway
- smart-home
- home-assistant
- zigbee2mqtt

## Components

- **EFR32MG21** (SoC): Silicon Labs Zigbee 3.0 SoC with +20 dBm TX power — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.silabs.com%2Fdocuments%2Fpublic%2Fdata-sheets%2Fefr32mg21-datasheet.pdf&ref=openhardware.directory&product=sonoff-zigbee-3-0-usb-dongle-plus-e&source=md-export)

## Description

# Sonoff Zigbee 3.0 USB Dongle Plus E (ZBDongle-E)

The Sonoff ZBDongle-E is a Zigbee 3.0 USB coordinator dongle based on the Silicon Labs EFR32MG21 chip. It is one of the most popular Zigbee coordinators for Home Assistant and Zigbee2MQTT setups, offering reliable performance and wide device compatibility.

## Key Features

- **EFR32MG21 (Silicon Labs)** Zigbee 3.0 chip with +20 dBm output power
- **Zigbee 3.0** protocol support with backward compatibility
- **USB 2.0** interface for easy plug-and-play setup
- **External antenna** (SMA connector) for extended range
- Pre-flashed with coordinator firmware, ready to use out of the box
- Compact dongle form factor

## Use Cases

- **Zigbee coordinator** for smart home networks
- **Home Assistant** integration via ZHA or Zigbee2MQTT
- **Zigbee2MQTT** bridge for MQTT-based home automation
- Building and managing large Zigbee mesh networks

## Compatibility

- Home Assistant (ZHA integration)
- Zigbee2MQTT
- Compatible with 200+ Zigbee device brands

## Resources

- [Sonoff Official Page](https://sonoff.tech/product/gateway-and-sensors/sonoff-zigbee-3-0-usb-dongle-plus-e/)
- [Zigbee2MQTT Supported Adapters](https://www.zigbee2mqtt.io/guide/adapters/)

## Where to Buy

- [OpenELAB](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Fseeed-studio-sonoff-zigbee-3-0-usb-dongle-plus-zbdongle-e&ref=openhardware.directory&product=sonoff-zigbee-3-0-usb-dongle-plus-e&source=md-export) — $29.90

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fsonoff.tech%2Fproduct%2Fgateway-and-sensors%2Fsonoff-zigbee-3-0-usb-dongle-plus-e%2F&ref=openhardware.directory&product=sonoff-zigbee-3-0-usb-dongle-plus-e&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fitead%2FSonoff_Zigbee_Dongle_Firmware&ref=openhardware.directory&product=sonoff-zigbee-3-0-usb-dongle-plus-e&source=md-export)

## Tags

`zigbee`, `coordinator`, `home-assistant`, `zigbee2mqtt`, `sonoff`, `efr32mg21`, `smart-home`, `usb-dongle`

## Images

![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/dc85a28ef506.png)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/3c82cb22a1f1.png)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/f9c71ae77e5f.jpg)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/76fbbe7d1bd0.png)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/431c0d729056.png)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/73c20d88edc9.png)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/28494f4e859c.jpg)
![Sonoff Zigbee 3.0 USB Dongle Plus E](https://nbg1.your-objectstorage.com/openhardware-directory/entities/sonoff-zigbee-3-0-usb-dongle-plus-e/e8e480a6e0b6.jpg)

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