Nabu Casa Home Assistant Connect ZWA-2 vs Smlight SLZB Ultima

Data from Amazon and official Nabu Casa and Smlight sites.

2026 verdict

Across the full comparison in 2026, Smlight SLZB Ultima earns the nod. Its strongest advantages show up in connectivity, zigbee router, and thread border router, with dual network and bluetooth proxy helping widen the gap. Choose Nabu Casa Home Assistant Connect ZWA-2 only if its specific feature mix matters more to you than the broader advantage from Smlight SLZB Ultima. Overall, Smlight SLZB Ultima makes more sense for most people.

Nabu Casa

Nabu Casa Home Assistant Connect ZWA-2

$79.00

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Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

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Feature	Nabu Casa Home Assistant Connect ZWA-2	Smlight SLZB Ultima	Winner
Connectivity	USB	USB, Ethernet, 2.4 GHz Wifi	Smlight SLZB Ultima
Zigbee Router	NO	YES	Smlight SLZB Ultima
Thread Border Router	NO	YES	Smlight SLZB Ultima
Dual Network	NO	YES	Smlight SLZB Ultima
Bluetooth Proxy	NO	YES	Smlight SLZB Ultima
Warranty	1 year	1 year	Tie
Power	USB	PoE	Tie
Z-Wave Controller	YES	YES	Tie
Matter Bridge	NO	NO	Tie

Nabu Casa

Nabu Casa Home Assistant Connect ZWA-2

$79.00

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- Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi
- Zigbee Router: NO vs YES

Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

BUY NOW

+ Connectivity: USB, Ethernet, 2.4 GHz Wifi
+ Zigbee Router: YES
+ Thread Border Router: YES

Frequently Asked Questions (FAQ)

Which is better overall: Nabu Casa Home Assistant Connect ZWA-2 or Smlight SLZB Ultima?: Smlight SLZB Ultima has the stronger overall profile in this comparison, especially for connectivity, zigbee router, and thread border router.
What is the biggest difference between Nabu Casa Home Assistant Connect ZWA-2 and Smlight SLZB Ultima?: Connectivity is one of the clearest differences: Nabu Casa Home Assistant Connect ZWA-2 lists USB, while Smlight SLZB Ultima lists USB, Ethernet, 2.4 GHz Wifi.
Who should buy Nabu Casa Home Assistant Connect ZWA-2?: Choose Nabu Casa Home Assistant Connect ZWA-2 if your priority is its specific strengths and that matters more than connectivity.
Who should buy Smlight SLZB Ultima?: Choose Smlight SLZB Ultima if your priority is connectivity and zigbee router and that matters more than the competing advantages.

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