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

Full Smart Dongles comparison in 2026

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.
FeatureNabu Casa Home Assistant Connect ZWA-2Smlight SLZB UltimaWinner
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
PowerUSBPoETie
Z-Wave ControllerYESYESTie
Matter BridgeNONOTie

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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