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Dongles · Head to head

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

Full Smart Dongles comparison in 2026

Updated September 2026
Data from Amazon and official Nabu Casa and Smlight sites.
2026 verdict
Across the 2026 comparison, Smlight SLZB Ultima earns the nod over Nabu Casa Home Assistant Connect ZWA-2 on the strength of power, connectivity, and zigbee router.
Smlight SLZB Ultima
Winner
Smlight SLZB Ultima
$95.99
Buy on Amazon USACheck price
Its strongest advantages show up in power, connectivity, and zigbee router, with thread border router and dual network helping widen the gap. Choose Nabu Casa Home Assistant Connect ZWA-2 only if price and rating matter more to you than the broader advantage from Smlight SLZB Ultima. Overall, Smlight SLZB Ultima makes more sense for most people.
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FeatureNabu Casa Home Assistant Connect ZWA-2Smlight SLZB UltimaWinner
Price$79.00$95.99Nabu Casa Home Assistant Connect ZWA-2
Rating4.62.0Nabu Casa Home Assistant Connect ZWA-2
PowerUSBUSB, PoESmlight SLZB Ultima
ConnectivityUSBUSB, Ethernet, 2.4 GHz WiFiSmlight SLZB Ultima
Zigbee RouterNOYESSmlight SLZB Ultima
Thread Border RouterNOYESSmlight SLZB Ultima
Dual NetworkNOYESSmlight SLZB Ultima
Bluetooth ProxyNOYESSmlight SLZB Ultima
Warranty1 year1 yearTie
Z-Wave ControllerYESYESTie
Matter BridgeNONOTie

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.

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

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Frequently Asked Questions

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 power, connectivity, and zigbee router.

What is the biggest difference between Nabu Casa Home Assistant Connect ZWA-2 and Smlight SLZB Ultima?

Price is one of the clearest differences: Nabu Casa Home Assistant Connect ZWA-2 lists $79.00, while Smlight SLZB Ultima lists $95.99.

Which one looks better on price?

Nabu Casa Home Assistant Connect ZWA-2 is listed at $79.00, while Smlight SLZB Ultima is listed at $95.99. Nabu Casa Home Assistant Connect ZWA-2 (better spec).

Who should buy Nabu Casa Home Assistant Connect ZWA-2?

Choose Nabu Casa Home Assistant Connect ZWA-2 if your priority is price and rating and that matters more than power.

Who should buy Smlight SLZB Ultima?

Choose Smlight SLZB Ultima if your priority is power and connectivity and that matters more than price.

Full comparison table

Compare all 36 Dongles side by side

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  • 36 Dongles
  • 32 specs compared
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