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Dongles · Head to head

Smlight SLZB Ultima vs Sonoff Dongle Max

Full Smart Dongles comparison in 2026

Updated September 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
In 2026, the recommendation leans toward Smlight SLZB Ultima over Sonoff Dongle Max, driven by Z-Wave controller, dual network, and bluetooth proxy.
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 price and rating matter more to you than the broader advantage from Smlight SLZB Ultima. That makes Smlight SLZB Ultima the clearer recommendation in 2026.
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FeatureSmlight SLZB UltimaSonoff Dongle MaxWinner
Price$95.99€45.02Sonoff Dongle Max
Rating2.04.3Sonoff Dongle Max
Z-Wave ControllerYESNOSmlight SLZB Ultima
Dual NetworkYESNOSmlight SLZB Ultima
Bluetooth ProxyYESNOSmlight SLZB Ultima
Zigbee Chip ModelEFR32MGXX / CC26XXPXEFR32MG24Different strengths
Warranty1 year1 yearTie
PowerUSB, PoEUSB, PoETie
ConnectivityUSB, Ethernet, 2.4 GHz WiFiUSB, Ethernet, 2.4 GHz WiFiTie
Zigbee RouterYESYESTie
Thread Border RouterYESYESTie
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.

  • Smlight SLZB Ultima
  • Sonoff Dongle Max

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Frequently Asked Questions

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?

Price is one of the clearest differences: Smlight SLZB Ultima lists $95.99, while Sonoff Dongle Max lists €45.02.

Which one looks better on price?

Smlight SLZB Ultima is listed at $95.99, while Sonoff Dongle Max is listed at €45.02. Sonoff Dongle Max (better spec).

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 price.

Who should buy Sonoff Dongle Max?

Choose Sonoff Dongle Max if your priority is price and rating and that matters more than Z-Wave controller.

Full comparison table

Compare all 36 Dongles side by side

You are looking at two of them. The full table lines up all Dongles in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 36 Dongles
  • 32 specs compared
  • 29 filters
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