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Description
SONOFF DONGLE-LMG21 ZIGBEE/T USBA Compact USB Dongle with ZIGBEE 3. 0 Openthread Support, EFR32MG21 Chip, Enabling Reliable Local Smart Home Control on Home Assistant or ZIGBEE2MQTT. Compact USB Dongle Overview The SONOFF Dongle LMG21 (Dongle Lite MG21) is a compact USB Zigbee 3. 0 coordinator that lets you create fast, reliable local control with Home Assistant, Zigbee2MQTT, openHAB, and other platforms. Built on the EFR32MG21 radio, the hardware provides a stable Zigbee mesh
A Compact USB Dongle with ZIGBEE 3.0/Openthread Support, EFR32MG21 Chip, Enabling Reliable Local Smart-Home Control on Home Assistant or ZIGBEE2MQTT.
Compact USB Dongle
Overview
The SONOFF Dongle-LMG21 (Dongle Lite MG21) is a compact USB Zigbee 3.0 coordinator that lets you create fast, reliable local control with Home Assistant, Zigbee2MQTT, openHAB, and other platforms. Built on the EFR32MG21 radio, the hardware provides a stable Zigbee mesh network, allowing bulbs, switches, and sensors from different brands to be paired and controlled within a single system.
The dongle works in a Plug&Play manner on Windows, Ubuntu, and Raspberry Pi OS (including Docker environments), and its external, ≤180° adjustable antenna delivers better range. For advanced users, flashable firmware is available (Zigbee NCP/Router, OpenThread RCP, MultiPAN), enabling configuration for multiple network roles as needed.
A cost-effective entry-/mid-tier solution for building your own Zigbee network with DIY-focused community support. Ideal as the backbone of small to medium smart homes.
Features
- Compact Zigbee coordinator: build a stable Zigbee 3.0 mesh network with cross-brand device pairing.
- Wide platform support: works with Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, and Jeedom.
- Plug&Play setup: quick commissioning on Windows, Ubuntu, Raspberry Pi OS, and in Docker environments.
- Flashable firmware: Zigbee NCP/Router, OpenThread RCP, and MultiPAN modes for advanced configurations.
- External antenna: ≤180° adjustable for improved signal strength and range.
Smart Home Protocols and Platform Compatibility
- Supported protocols: Zigbee 3.0 (default); in advanced mode OpenThread RCP / MultiPAN (depending on firmware).
- Compatible platforms: Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, Jeedom.
- Local control: manage paired Zigbee devices over LAN without the cloud.
- Operating systems: Windows, Ubuntu, Raspberry Pi OS; also usable with Docker.
Smart Features
- Create a Zigbee mesh: build a stable, scalable network with your own coordinator and unify devices.
- Cross-brand device management: integrate bulbs, switches, and sensors from various manufacturers.
- Advanced modes: with firmware swap, set up Router/RCP/MultiPAN modes for specialized use cases.
Specifications
- Power supply: 5 V⎓ / 500 mA (via USB)
- Enclosure: PC+ABS housing.
- External antenna: adjustable, ≤180°.
- DIY focus: community guides available for advanced features (e.g., firmware flashing).
- Model: SONOFF Dongle-LMG21 (Dongle Lite MG21)
- SoC / radio: Silicon Labs EFR32MG21
- Protocol: Zigbee 3.0 (flashable: Zigbee NCP/Router, OpenThread RCP, MultiPAN)
- Compatibility: Home Assistant (ZHA), Zigbee2MQTT, openHAB, ioBroker, Domoticz, Jeedom
- OS support: Windows, Ubuntu, Raspberry Pi OS; Docker
- Power: 5 V⎓ / 500 mA (USB)
- Dimensions: 133 × 18.6 × 10.1 mm
- Operating temperature: 10–60 °C
- Humidity: 5–95% RH
- Note: Thread/MultiPAN features require a firmware update; setup is recommended for advanced users.
Additional Information
| Device | Dongle |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
My dog LOVES these!
Pattern Name: Peanut Butter, Size: 6 Inch (Pack of 15)
My two year old mini poodle loves these! Of course all dogs love peanut butter. And carrots! The only caution I take is to only let her eat half. Yes it is a wrestling match when making her retreat. LOL
I find if my girl eats it all she is likely to have ugly bowel issue either later or first thing when she rises in the morning . I still buy them over and over but use with a plan in mind. I think they are medium hardness. My dog really needs something harder to engage for days. I do buy the hard Himalayan cheese on Amazon but she prefers her other options. Depending on your breed size and how much you like to clean up poo determines your personal plan for your fur baby.
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Reviewed in the United States on November 19, 2025
★★★★★ 1
Made my dog very sick!
My dog has been eating these for 3 years. He loves them and they help keep his teeth clean. I gave him one from the New bag I ordered. It looked a little lighter in color but I thought it was fine. That was this past Sunday. He only ate half of it and I thought that was odd. That night around 1am he threw up. Then had diarrhea later that morning. I thought maybe he ate something in the yard. Now Monday he stopped eating and had explosive diarrhea. Took him to vet on Tuesday morning. They did bloodwork, checked feces and had x ray done incase of a possible blockage. Finally got results on Thursday and 700.00 later. Doctor said he must of eaten something but can't say exactly what. He's doing better now with an antibiotic. The only thing he ate was that bully bone on Sunday. It was really scary because he was so sick. I will be throwing out these bones and try to find something safe for him to chew. This was a great product until they may have changed ingredients.
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Reviewed in the United States on June 29, 2025
★★★★★ 5
The Best Flavor-Packed Toy to Stuff and Chew! 🐾
Flavor Name: REAL Bacon, Size: Medium
Hello, it’s Skye! I’m back with another very important product update. If you are a dog who loves a challenge and loves real bacon, you need to tell your humans to get you the Benebone Ring Durable Dog Chew Toy.
Why this ring is my absolute favorite:
The Ultimate Treat Bowl: My absolute favorite part about this ring is the hollow center. My humans stuff it full of yummy treats, freeze-dried raw bites, or a little dog-safe peanut butter, and it turns into the best puzzle bowl ever! I will happily spend hours licking and working to get every single crumb out.
Tastes Like Real Bacon: Even after I clean out all the stuffed treats, the toy itself is infused with real, delicious bacon flavor. It doesn't smell like fake chemicals; it smells like the real deal, which makes my nose very happy.
Super Durable for Heavy Chewing: I have sharp puppy teeth and I love to chomp, but this durable nylon ring is tough. The curved design makes it really easy for me to flip up with my paws and hold securely while I chew away.
It keeps me completely occupied, exercises my brain, and satisfies my need to chew. Five paws up for the best stuffed treat ring ever! 🐶🥓
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Recommend
Flavor Name: REAL Bacon, Size: Small
This chew toy is great for aggressive chewers—it’s very durable and holds up much longer than most other toys we’ve tried. The ring shape makes it easy for dogs to grip and carry, and my dog was immediately interested in it, likely because of the real bacon flavor. It’s also a nice bonus that it’s made in the USA and doesn’t have a strong smell for humans.
That said, it is very hard, so I’d recommend keeping an eye on your dog while they’re using it, especially if they’re an intense chewer. Over time, it does wear down and needs to be replaced once the edges get rough.
Overall: a long-lasting, high-quality chew that keeps dogs occupied—just be mindful of the hardness and monitor for wear.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Long lasting chew toy!
Flavor Name: REAL Bacon, Size: Large, Flavor Name: REAL Bacon, Size: Large
All I can say is wow! I have a Basset Hound mix who will be in the puppy stage for another year, and as we all know, that means dealing with teething issues. Seeing the photo of this product when it was new makes it obvious what he’s done to it. He’s still at it, chewing like mad. Made for medium to large dogs, he happily totes it around everywhere, and I’m always picking it up so I don’t trip over it.
The inner cup can hold peanut butter as a special treat for your pet, and I give him some when he’s feeling a bit bored. It doesn’t last long, but he’ll keep chewing on it for a while afterward. For me, the value is worth the price if it keeps his teeth off my furniture—pet owners know exactly what I mean.
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Reviewed in the United States on January 30, 2026
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