Updated June 2026
Data from Amazon and official Nabu Casa and Sonoff sites.
2026 verdict
Sonoff Dongle Lite MG21 beats Nabu Casa Home Assistant Connect ZWA-2 in 2026, with its clearest edge on price, zigbee router, and thread border router. What pushes it ahead is price, zigbee router, and thread border router, and its broader overall balance keeps the advantage from looking narrow. Pick Nabu Casa Home Assistant Connect ZWA-2 only when rating, z-wave controller, and antenna gain is the deciding factor for your setup. Overall, Sonoff Dongle Lite MG21 makes more sense for most people.
| Feature | Nabu Casa Home Assistant Connect ZWA-2 | Sonoff Dongle Lite MG21 | Winner |
|---|---|---|---|
| Price | $79.00 | $19.90 | Sonoff Dongle Lite MG21 |
| Rating | 4.7 | 4.6 | Nabu Casa Home Assistant Connect ZWA-2 |
| Zigbee Router | NO | YES | Sonoff Dongle Lite MG21 |
| Z-Wave Controller | YES | NO | Nabu Casa Home Assistant Connect ZWA-2 |
| Thread Border Router | NO | YES | Sonoff Dongle Lite MG21 |
| Antenna Gain | +3.38dBi | +3dBi | Nabu Casa Home Assistant Connect ZWA-2 |
| Amplifier Gain | +20dB | +20 dBm | Different strengths |
| Warranty | 1 year | 1 year | Tie |
| Power | USB | USB | Tie |
| Connectivity | USB | USB | Tie |
| Matter Bridge | NO | NO | Tie |
| Dual Network | NO | NO | Tie |
$79.00
- + Rating: 4.7
- + Z-Wave Controller: YES
- + Antenna Gain: +3.38dBi
- - Price: $79.00 vs $19.90
- - Zigbee Router: NO vs YES
Winner
$19.90
- + Price: $19.90
- + Zigbee Router: YES
- + Thread Border Router: YES
- - Rating: 4.6 vs 4.7
- - Z-Wave Controller: NO vs YES
Frequently Asked Questions
Which is better overall: Nabu Casa Home Assistant Connect ZWA-2 or Sonoff Dongle Lite MG21?
Sonoff Dongle Lite MG21 has the stronger overall profile in this comparison, especially for price, zigbee router, and thread border router.
What is the biggest difference between Nabu Casa Home Assistant Connect ZWA-2 and Sonoff Dongle Lite MG21?
Price is one of the clearest differences: Nabu Casa Home Assistant Connect ZWA-2 lists $79.00, while Sonoff Dongle Lite MG21 lists $19.90.
Which one looks better on price?
Nabu Casa Home Assistant Connect ZWA-2 is listed at $79.00, while Sonoff Dongle Lite MG21 is listed at $19.90. Sonoff Dongle Lite MG21 (better spec).
Who should buy Nabu Casa Home Assistant Connect ZWA-2?
Choose Nabu Casa Home Assistant Connect ZWA-2 if your priority is rating and z-wave controller and that matters more than price.
Who should buy Sonoff Dongle Lite MG21?
Choose Sonoff Dongle Lite MG21 if your priority is price and zigbee router and that matters more than rating.
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