Nabu Casa Home Assistant Connect ZBT-2 vs Sonoff Dongle Lite MG21

Updated March 2026

Data from Amazon and official Nabu Casa and Sonoff sites.

2026 verdict

Taken as a whole in 2026, Sonoff Dongle Lite MG21 wins this matchup. It has the clearer edge on price, zigbee router, and amplifier gain, and it stays ahead on its broader overall balance. Nabu Casa Home Assistant Connect ZBT-2 is still relevant if you care most about antenna gain, but Sonoff Dongle Lite MG21 is the stronger recommendation overall. That makes Sonoff Dongle Lite MG21 the clearer recommendation in 2026.

Nabu Casa

Nabu Casa Home Assistant Connect ZBT-2

$65.00

BUY NOW

Winner

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

Feature	Nabu Casa Home Assistant Connect ZBT-2	Sonoff Dongle Lite MG21	Winner
Price	$65.00	$19.90	Sonoff Dongle Lite MG21
Zigbee Router	NO	YES	Sonoff Dongle Lite MG21
Amplifier Gain	10 dBm	+20 dBm	Sonoff Dongle Lite MG21
Antenna Gain	+4.16dBi	+3dBi	Nabu Casa Home Assistant Connect ZBT-2
Zigbee Chip Model	EFR32MG24	EFR32MG21	Different strengths
Rating	4.7	4.7	Tie
Warranty	1 year	1 year	Tie
Power	USB	USB	Tie
Connectivity	USB	USB	Tie
Z-Wave Controller	NO	NO	Tie
Thread Border Router	YES	YES	Tie
Matter Bridge	NO	NO	Tie

Nabu Casa

Nabu Casa Home Assistant Connect ZBT-2

$65.00

BUY NOW

+ Antenna Gain: +4.16dBi
- Price: $65.00 vs $19.90
- Zigbee Router: NO vs YES

Winner

Sonoff

Sonoff Dongle Lite MG21

$19.90

BUY NOW

+ Price: $19.90
+ Zigbee Router: YES
+ Amplifier Gain: +20 dBm
- Antenna Gain: +3dBi vs +4.16dBi

Frequently Asked Questions (FAQ)

Which is better overall: Nabu Casa Home Assistant Connect ZBT-2 or Sonoff Dongle Lite MG21?: Sonoff Dongle Lite MG21 has the stronger overall profile in this comparison, especially for price, zigbee router, and amplifier gain.
What is the biggest difference between Nabu Casa Home Assistant Connect ZBT-2 and Sonoff Dongle Lite MG21?: Price is one of the clearest differences: Nabu Casa Home Assistant Connect ZBT-2 lists $65.00, while Sonoff Dongle Lite MG21 lists $19.90.
Which one looks better on price?: Nabu Casa Home Assistant Connect ZBT-2 is listed at $65.00, while Sonoff Dongle Lite MG21 is listed at $19.90. Sonoff Dongle Lite MG21 (better spec).
Who should buy Nabu Casa Home Assistant Connect ZBT-2?: Choose Nabu Casa Home Assistant Connect ZBT-2 if your priority is antenna gain 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 antenna gain.

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