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Dongles · Head to head

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

Full Smart Dongles comparison in 2026

Updated November 2026
Data from the official Nabu Casa and Smlight sites.
2026 verdict
Smlight SLZB Ultima edges out Nabu Casa Home Assistant Connect ZBT-2 in 2026, led by power, connectivity, and zigbee router.
Smlight SLZB Ultima
Winner
Smlight SLZB Ultima
$95.99
Buy on Amazon USA
Its biggest wins come from power, connectivity, and zigbee router, and Z-Wave controller and dual network add more confidence to the verdict. You should still consider Nabu Casa Home Assistant Connect ZBT-2 if price and rating matter more than raw overall balance. That is enough to make Smlight SLZB Ultima the better pick for most buyers.
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FeatureNabu Casa Home Assistant Connect ZBT-2Smlight SLZB UltimaWinner
Price£73.74$95.99Nabu Casa Home Assistant Connect ZBT-2
Rating4.72.0Nabu Casa Home Assistant Connect ZBT-2
PowerUSBUSB, PoESmlight SLZB Ultima
ConnectivityUSBUSB, Ethernet, 2.4 GHz WiFiSmlight SLZB Ultima
Zigbee RouterNOYESSmlight SLZB Ultima
Z-Wave ControllerNOYESSmlight SLZB Ultima
Dual NetworkNOYESSmlight SLZB Ultima
Bluetooth ProxyNOYESSmlight SLZB Ultima
Zigbee Chip ModelEFR32MG24EFR32MGXX / CC26XXPXDifferent strengths
Warranty1 year1 yearTie
Thread Border RouterYESYESTie
Matter BridgeNONOTie

Frequently Asked Questions

Which is better overall: Nabu Casa Home Assistant Connect ZBT-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 ZBT-2 and Smlight SLZB Ultima?

Price is one of the clearest differences: Nabu Casa Home Assistant Connect ZBT-2 lists £73.74, while Smlight SLZB Ultima lists $95.99.

Which one looks better on price?

Nabu Casa Home Assistant Connect ZBT-2 is listed at £73.74, while Smlight SLZB Ultima is listed at $95.99. Nabu Casa Home Assistant Connect ZBT-2 (better spec).

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

Choose Nabu Casa Home Assistant Connect ZBT-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.

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