Winner
Updated October 2026
Data from Amazon and official Sonoff site.
2026 verdict
For a USB Zigbee stick bought today, the Sonoff Dongle Lite MG21 edges out the Sonoff ZBDongle-P on Thread support, antenna gain and cost.
Its Silicon Labs EFR32MG21 can be flashed into a Thread border router, which the Texas Instruments CC2652P in the Sonoff ZBDongle-P cannot do in this catalog, and its antenna is rated at +3dBi against 2 dBi. The Sonoff ZBDongle-P answers with a two-year warranty against one, an aluminium case, and a long track record as the community's reference coordinator, with owners praising its compatibility across hosts. Buy the Sonoff Dongle Lite MG21 if Matter over Thread is on the horizon or budget is tight, and the Sonoff ZBDongle-P if you want the most proven Zigbee-only stick and the longer cover.
vs
16% OFF
$33.45
$39.99
11% above its lowest price of the last 6 months ($30.26)
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| Feature | Sonoff Dongle Lite MG21 | Sonoff ZBDongle-P | Winner |
|---|---|---|---|
| Price | $24.90 | $33.45 | Sonoff Dongle Lite MG21 |
| Rating | 4.5 | 4.6 | Sonoff ZBDongle-P |
| Warranty | 1 year | 2 years | Sonoff ZBDongle-P |
| Thread Border Router | YES | NO | Sonoff Dongle Lite MG21 |
| Zigbee Chip Model | EFR32MG21 | CC2652P | Different strengths |
| Power | USB | USB | Tie |
| Connectivity | USB | USB | Tie |
| Zigbee Router | YES | YES | Tie |
| Z-Wave Controller | NO | NO | Tie |
| Matter Bridge | NO | NO | Tie |
| Transmit Power | +20dBm | +20dBm | Tie |
| Antenna Gain | +2dBi | +2dBi | Tie |
What the differences mean
Thread support
The Sonoff Dongle Lite MG21 can be flashed to act as a Thread border router for Matter devices. The Sonoff ZBDongle-P is recorded as Zigbee only, so a Thread network would need another radio.
Chip family
The Sonoff Dongle Lite MG21 runs a Silicon Labs EFR32MG21, the Sonoff ZBDongle-P a Texas Instruments CC2652P. Both are well supported Zigbee 3.0 coordinators and routers in Home Assistant and Zigbee2MQTT, so for Zigbee alone the chip is not what decides it.
Antenna
Both have +20 dBm of transmit power and one external antenna, rated +3dBi on the Sonoff Dongle Lite MG21 and 2 dBi on the Sonoff ZBDongle-P. It is a small gap you are unlikely to notice in a normal home.
Warranty and build
Sonoff gives the Sonoff ZBDongle-P two years of warranty against one on the Sonoff Dongle Lite MG21, and owners describe its aluminium case as premium, if bulky.
Which one to buy if
- you want Matter over Thread devices later
The Sonoff Dongle Lite MG21 can be reflashed as a Thread border router; the Sonoff ZBDongle-P cannot in this catalog.
- you want the most proven Zigbee-only coordinator
Owners treat the Sonoff ZBDongle-P as the community reference, with smooth migrations and broad host support.
- you are adding cheap Zigbee routers around the house
The Sonoff Dongle Lite MG21 is the more affordable stick and works as a router as well as a coordinator.
- a longer warranty matters to you
The Sonoff ZBDongle-P comes with two years of cover against one.
Winner
- + Price: $24.90
- + Thread Border Router: YES
- - Rating: 4.5 vs 4.6
- - Warranty: 1 year vs 2 years
16% OFF
$33.45
$39.99
- + Rating: 4.6
- + Warranty: 2 years
- - Price: $33.45 vs $24.90
- - Thread Border Router: NO vs YES
What owners say
Owners of the Sonoff Dongle Lite MG21 and the Sonoff ZBDongle-P tell a similar story about daily use: quick recognition in Home Assistant, clean work with ZHA or Zigbee2MQTT and steady networks with dozens of devices. Sonoff Dongle Lite MG21 owners stress value and flexibility, running units as coordinator and routers, and like the extension cable in the box; they complain that flashing it for Thread takes effort and that one firmware update broke OpenHAB. Sonoff ZBDongle-P owners single out responsiveness, some finding it smoother than a ConBee II, quick migration from another stick and a premium aluminium case. Their gripes are a bulky case that blocks nearby ports, VM passthrough that needs troubleshooting and rough flashing instructions.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Sonoff Dongle Lite MG21
- Sonoff ZBDongle-P
Loading price history...
Frequently Asked Questions
Which is better overall: Sonoff Dongle Lite MG21 or Sonoff ZBDongle-P?
The Sonoff Dongle Lite MG21, because it adds Thread border router support and a slightly stronger antenna at a lower cost. The Sonoff ZBDongle-P remains an excellent Zigbee-only coordinator with a two-year warranty.
What is the biggest difference between the Sonoff Dongle Lite MG21 and the Sonoff ZBDongle-P?
Thread. The Sonoff Dongle Lite MG21 can become a Thread border router for Matter devices after a firmware flash, while the Sonoff ZBDongle-P is Zigbee only. They also use different chips, a Silicon Labs EFR32MG21 against a Texas Instruments CC2652P.
What do owners say about the Sonoff Dongle Lite MG21?
Owners of the Sonoff Dongle Lite MG21 describe it as an affordable, nearly plug-and-play Zigbee coordinator for Home Assistant that runs dozens of devices steadily and comes with a handy extension cable. The common caveat is that flashing it for Thread can take some effort.
Do I need a USB extension cable with the Sonoff Dongle Lite MG21 or the Sonoff ZBDongle-P?
Owners of both recommend one. The Sonoff Dongle Lite MG21 ships with an extension cable that keeps it away from interference-prone USB 3 ports, and Sonoff ZBDongle-P owners use a short extension to clear its bulky aluminium case and reduce interference.
Who should buy the Sonoff Dongle Lite MG21?
Budget-minded Home Assistant users who want a Zigbee coordinator or router today and the option to run Thread for Matter devices later.
Who should buy the Sonoff ZBDongle-P?
Anyone who wants the long-standing reference Zigbee coordinator, with broad host compatibility, a sturdy aluminium case and a two-year warranty, and has no need for Thread.
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