USB dongle SONOFF SONOFF ZigBee (Dongle-LMG21)
USB dongle SONOFF SONOFF ZigBee (Dongle-LMG21)
Product:
SKU Code:
Dongle-LMG21
Bar code:
6920075743456
Availability in stock:
On order..
Availability in the supplier's warehouse:
> 50 pcs.
Price:
€ 20.65
Delivery time at the pickup address:
To our warehouse:
5
working days
Shipping company:
0
working days
Total days:
5
working days
Today 25.06.2026
Shipping cost:
€ 0.00
Shipping time to parcel box:
To our warehouse:
5
working days
Shipping company:
2
working days
Total days:
7
working days
Monday 29.06.2026
Shipping cost:
From € 2.50
Shipping time by courier:
To our warehouse:
5
working days
Shipping company:
3
working days
Total days:
8
working days
Tuesday 30.06.2026
Shipping cost:
From € 4.90
In order for above mentioned delivery dates by parcel locker and courier to be met, order has to been placed in time and seller has managed to send it out by the end of working day.
SONOFF Dongle-LMG21 ZigBee Gateway (Home Assistant, openHAB, Zigbee2MQTT).
SONOFF Dongle-LMG21 is a compact and versatile ZigBee/Thread USB gateway, designed for stable and flexible integration of smart home devices with popular open source platforms. With its proven EFR32MG21 chip, adjustable antenna, ability to operate in different modes (coordinator, router, Thread RCP) and ready-to-use quick flash tools, the device is a functional communication center for systems based on Home Assistant, Zigbee2MQTT or openHAB.
Stable EFR32MG21 chip - the heart of your ZigBee network
Silicon Labs' EFR32MG21 chipset ensures low power consumption, stable communication and full utilization of hardware potential, which translates into reliable operation even with an extensive network of ZigBee devices.
One device - many functions
The Dongle-LMG21 can operate as a ZigBee coordinator, ZigBee router, Thread RCP or in MultiPAN mode, allowing simultaneous operation of ZigBee and Thread devices. This provides a great deal of configuration flexibility - both for novice users and those planning more advanced Matter over Thread installations. A dedicated SONOFF Dongle Flasher tool and instructions page make changing the firmware literally a snap. This is a major convenience for those who want to quickly customize the device for a specific application.
Compatibility with open platforms
The device was designed with open source environments in mind. It works seamlessly with popular automation systems, allowing local control, scene expansion and full data control - without dependence on the manufacturer's cloud.
Adjustable antenna and extended range
An adjustable antenna with a clever design allows you to adjust its positioning to suit your installation conditions. In an open space, a stable range of up to 140 meters is possible, making it easy to build a reliable ZigBee network in larger apartments or single-family homes.
Compact, robust design
The ultrasonically welded housing combines compact dimensions with high durability. The dongle is about 65% smaller than older designs, so it doesn't take up space at the USB port and is also great for installation with mini-computers or SBC servers. The kit comes with a USB extension cable (0.5 m), which allows the dongle to be moved away from the computer or Raspberry Pi chassis. This solution effectively reduces electromagnetic interference and improves the stability of wireless communication.
Included:
- ZigBee gateway SONOFF Dongle-LMG21
- Antenna with adjustable angle
- USB extension cable (0.5 m)
- User manual
| Manufacturer | SONOFF |
|---|---|
| Model | Dongle-LMG21 |
| Power supply | 5 V ⎓ 500 mA |
| ZigBee standard | IEEE 802.15.4 |
| Operating temperature | -10°C to 60°C |
| Housing material | aluminum, PC + ABS |
| Color | dark gray |
| Dimensions of the dongle | 43 × 18.5 mm |
| Antenna length | 90 mm |
Delivery and Shipping
We know that time is money. That is why our core products, including the full range of VIDEX LED lighting, are in stock in our warehouse. This allows us to ensure fast and accurate order processing for both private individuals and B2B clients across the Baltics.
Delivery methods:
Parcel machines (Omniva, Venipak, LP Express / Unisend): A convenient and fast way to receive small and medium-sized goods at your preferred time.
Courier delivery: Delivery right to the door of your home, office, or project site. Ideal for larger orders, tools, and heavier goods.
B2B and pallet delivery: For large-volume orders and wholesale contract clients, we provide pallet delivery directly to your site, production facility, or warehouse.
Orders are processed and handed over for delivery immediately after receipt of payment (or in accordance with the B2B postpaid contract). Exact delivery costs are calculated automatically at checkout based on the size and weight of the items.
Payment Methods and Procedures
At opentools.lv, we provide secure and fast payment for your purchases. Payment processing is handled by our partner MakeCommerce (Maksekeskus AS), guaranteeing the highest data security standards.
Available payment methods:
Online banking and payment cards: Fast and secure payments with VISA, Mastercard, and major online banks (Swedbank, SEB, Citadele, Luminor, etc.).
Bank transfer and B2B deferred payment: For businesses and regular partners (contract clients), we provide a specialized B2B system. It allows you to place orders conveniently and receive postpaid invoices or deferred payments. Contact us to sign a partnership agreement and gain access to the B2B platform!
All payments are made in euros (EUR). Order processing and preparation for delivery begin immediately upon successful payment or in accordance with the terms of the B2B contract.
Available payment methods:
Online banking and payment cards: Fast and secure payments with VISA, Mastercard, and major online banks (Swedbank, SEB, Citadele, Luminor, etc.).
Bank transfer and B2B deferred payment: For businesses and regular partners (contract clients), we provide a specialized B2B system. It allows you to place orders conveniently and receive postpaid invoices or deferred payments. Contact us to sign a partnership agreement and gain access to the B2B platform!
All payments are made in euros (EUR). Order processing and preparation for delivery begin immediately upon successful payment or in accordance with the terms of the B2B contract.
