Smlight SLZB Ultima vs Sonoff Dongle Max

Full Smart Dongles comparison in 2026

Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
In 2026, the recommendation leans toward Smlight SLZB Ultima. It builds its lead on z-wave controller, dual network, and bluetooth proxy, then backs it up with a stronger showing on its broader overall balance. Choose Sonoff Dongle Max only if power matters more to you than the broader advantage from Smlight SLZB Ultima. That makes Smlight SLZB Ultima the clearer recommendation in 2026.
FeatureSmlight SLZB UltimaSonoff Dongle MaxWinner
PowerPoEUSB, PoESonoff Dongle Max
Z-Wave ControllerYESNOSmlight SLZB Ultima
Dual NetworkYESExperimentalSmlight SLZB Ultima
Bluetooth ProxyYESNOSmlight SLZB Ultima
Zigbee Chip ModelEFR32MGXX / CC26XXPXEFR32MG24Different strengths
Warranty1 year1 yearTie
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSB, Ethernet, 2.4 GHz WifiTie
Zigbee RouterYESYESTie
Thread Border RouterYESYESTie
Matter BridgeNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB Ultima or Sonoff Dongle Max?
Smlight SLZB Ultima has the stronger overall profile in this comparison, especially for z-wave controller, dual network, and bluetooth proxy.
What is the biggest difference between Smlight SLZB Ultima and Sonoff Dongle Max?
Power is one of the clearest differences: Smlight SLZB Ultima lists PoE, while Sonoff Dongle Max lists USB, PoE.
Who should buy Smlight SLZB Ultima?
Choose Smlight SLZB Ultima if your priority is z-wave controller and dual network and that matters more than power.
Who should buy Sonoff Dongle Max?
Choose Sonoff Dongle Max if your priority is power and that matters more than z-wave controller.
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