SONOFF Dongle Lite MG21 Zigbee/Thread USB Coordinator
R 549.00R 575.00Save R 26.00
In Stock — 23 available

📡 Budget Zigbee Coordinator — Compact, Proven, Ready to Go

The most affordable way to start your Zigbee smart home. Plug the Dongle Lite MG21 into your Home Assistant server, Raspberry Pi, or NAS and start controlling Zigbee devices locally — no cloud, no subscriptions.

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Free Delivery
Orders over R2,500
🇿🇦
Local Stock
Ships from Gauteng
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1 Year Warranty
Manufacturer

✨ What Makes This Special

  • Proven EFR32MG21 chip — trusted by millions, rock-solid Zigbee coordination
  • 65% smaller than ZBDongle-E — fits into tight USB ports without blocking neighbours
  • Plug & play — pre-flashed with Zigbee coordinator firmware, works immediately with Home Assistant (ZHA), Zigbee2MQTT, openHAB
  • Multi-firmware support — flash Zigbee Coordinator, Router, Thread RCP, or MultiPAN via SONOFF Dongle Flasher
  • USB extension cable included — 0.5m cable reduces USB 3.0 interference for better signal
  • External antenna — adjustable ≤180° for optimal signal direction
  • 1 Year Warranty
💡 Best for: First-time Home Assistant users, budget builds, small to medium homes, or anyone wanting a reliable Zigbee coordinator without breaking the bank.

🏆 Why Buy from Eiferer?

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Local SA Stock

Ships from Gauteng

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Best Prices

Competitive guaranteed

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Expert Support

Call Jesse: 071 678 8719

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Fast Shipping

Nationwide delivery

🧠 Works With

🔗 Supported Platforms

Plug into any USB port on your Home Assistant host. Auto-discovered in most platforms.

🧠 Home Assistant (ZHA)📡 Zigbee2MQTT🏠 openHAB🔧 ioBroker📊 Domoticz🐳 Docker

🎯 Key Features

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Plug & Play

Pre-flashed with Zigbee coordinator firmware. Plug into your HA server, auto-discovered in ZHA or Zigbee2MQTT. Up and running in minutes.

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Ultra-Compact

65% smaller than ZBDongle-E. Fits into tight USB ports on Raspberry Pi, mini PC, or NAS without blocking adjacent ports.

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Flash Any Firmware

SONOFF Dongle Flasher web tool lets you switch between Coordinator, Router, Thread RCP, or MultiPAN in under a minute. No disassembly needed.

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External Antenna

Adjustable external antenna (≤180°) for better range vs. internal antenna designs. Included USB extension cable further reduces interference.

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Multi-Brand Support

Pairs with Zigbee devices from SONOFF, Aqara, Philips Hue, IKEA, Tuya, and thousands more — via ZHA or Z2M.

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100% Local Control

All data stays on your network. No cloud dependency, no subscriptions, no data leaving your home. Privacy by design.

🔗 Compare SONOFF Zigbee Dongles

⭐ Best · PoE + WiFi + USB

SONOFF Dongle Max

Next-gen flagship. EFR32MG24, PoE Ethernet + WiFi + USB. Web console, dual 5dBi antennas, MQTT, VPN. For serious Home Assistant setups.

View Product →
Upgrade · EFR32MG24 USB

SONOFF Dongle Plus MG24

MG24 chip: 300% more RAM, 200m range, 3dBi antenna. USB stick with 1m extension cable. The ZBDongle-E upgrade.

View Product →
Classic · EFR32MG21 USB

SONOFF ZBDongle-E

The original. Same EFR32MG21 chip, +20dBm output, SMA antenna, shielded aluminium housing. Larger than LMG21.

View Product →
Complete Setup · Hub

Home Assistant Mini Server

Full HA server — add this dongle for Zigbee. 3,000+ integrations, advanced automations, local processing.

View Product →
⭐ Upgrade Available

SONOFF Dongle Max

Need more range and flexibility? The Dongle Max adds PoE Ethernet, WiFi, web console, and dual 5dBi antennas. Place it anywhere in your home — no USB cable limitation.

  • EFR32MG24 + ESP32 — next-gen chipset
  • Ethernet + WiFi + USB — connect any way you want
  • Web console — manage firmware & settings from browser
  • 90m+ range — with antenna placement optimisation
View Dongle Max →

📋 Technical Specifications

Model / MPN Dongle-LMG21
Product Name SONOFF Dongle Lite MG21 Zigbee/Thread USB Dongle
MCU EFR32MG21 (Silicon Labs)
Protocol Zigbee 3.0 (IEEE 802.15.4, 2.4 GHz)
Flashable Firmware Zigbee Coordinator, Zigbee Router, Thread RCP, MultiPAN RCP
Antenna 1× external, adjustable ≤180°, ~2-3 dBi
Interface USB Type-A
USB Extension Cable 0.5m included
Power 5V via USB
Supported Platforms Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, Jeedom, Node-RED
Supported OS Windows, Linux, macOS, Raspberry Pi OS, Docker
Operating Temperature -10°C to 60°C
Warranty 1 Year Manufacturer Warranty

❓ Frequently Asked Questions

What's the difference between Dongle Lite MG21 and ZBDongle-E?
Both use the same EFR32MG21 chip. The Dongle Lite MG21 is 65% smaller, more compact, and includes a 0.5m USB extension cable. The ZBDongle-E is larger with a shielded aluminium housing and +20dBm output. Performance is very similar — choose based on size preference and price.
Should I get this or the Dongle Plus MG24?
The Dongle Plus MG24 has a newer EFR32MG24 chip with 300% more RAM, longer range (200m), and better MultiPAN support. If budget allows, MG24 is the better choice. The LMG21 is the budget option that still works great for most setups.
How do I set it up with Home Assistant?
Plug in via USB (use extension cable). Go to Settings → Devices & Services → Add Integration → Zigbee Home Automation (ZHA). Your dongle is auto-detected. Start adding Zigbee devices immediately.
Can I flash different firmware?
Yes! Use the SONOFF Dongle Flasher web tool. Switch between Zigbee Coordinator, Router, Thread RCP, or MultiPAN in under a minute.
How many devices can it support?
Similar to ZBDongle-E: ~30 direct children in coordinator mode. Add Zigbee router devices (like ZBMINIR2 or ZBMINI-L2) to extend the mesh and support hundreds of devices. The limit depends on your platform, not the dongle.
Why use the USB extension cable?
USB 3.0 ports emit electromagnetic interference at 2.4 GHz — the same frequency as Zigbee. The extension cable physically separates the dongle from the USB port, improving signal quality and reliability. Always recommended.
What's included in the box?
1× Dongle Lite MG21, 1× 0.5m USB extension cable, Quick Start Guide.

📦 What's in the Box

📡 1× Dongle Lite MG21
🔌 1× USB Extension Cable (0.5m)
📖 Quick Start Guide

🤝 Need Help? We're Here for You!

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Call Us

Jesse: 071 678 8719
Jason: 084 505 7481

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Visit Us

8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709

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Email

info@eiferer.co.za

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SA Stock

Ready to Ship

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Zigbee 3.0

+ Thread + MultiPAN

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1 Year Warranty

Manufacturer

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Fast Shipping

Nationwide

Your Zigbee Journey Starts Here.

EFR32MG21 · Plug & Play · Home Assistant · Zigbee2MQTT · 100% Local

Free Delivery Over R2,500 · 1 Year Warranty · Local SA Support