Smlight SLZB Ultima vs Third Reality USBC-Dongle

Updated March 2026

Data from Amazon and official Smlight and Third Reality sites.

2026 verdict

In 2026, Smlight SLZB Ultima is the better overall pick. Its biggest wins come from connectivity, zigbee router, and z-wave controller, and dual network and bluetooth proxy adds more confidence to the verdict. Third Reality USBC-Dongle is the better fit only for buyers who prioritize matter bridge above everything else here. For most setups, Smlight SLZB Ultima is the smarter buy.

Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

BUY NOW

Third Reality

Third Reality USBC-Dongle

$19.99

BUY NOW

Feature	Smlight SLZB Ultima	Third Reality USBC-Dongle	Winner
Connectivity	USB, Ethernet, 2.4 GHz Wifi	USB	Smlight SLZB Ultima
Zigbee Router	YES	NO	Smlight SLZB Ultima
Z-Wave Controller	YES	NO	Smlight SLZB Ultima
Matter Bridge	NO	YES	Third Reality USBC-Dongle
Dual Network	YES	NO	Smlight SLZB Ultima
Bluetooth Proxy	YES	NO	Smlight SLZB Ultima
Warranty	1 year	1 year	Tie
Power	PoE	USB	Tie
Thread Border Router	YES	YES	Tie

Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

BUY NOW

+ Connectivity: USB, Ethernet, 2.4 GHz Wifi
+ Zigbee Router: YES
+ Z-Wave Controller: YES
- Matter Bridge: NO vs YES

Third Reality

Third Reality USBC-Dongle

$19.99

BUY NOW

+ Matter Bridge: YES
- Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi
- Zigbee Router: NO vs YES

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB Ultima or Third Reality USBC-Dongle?: Smlight SLZB Ultima has the stronger overall profile in this comparison, especially for connectivity, zigbee router, and z-wave controller.
What is the biggest difference between Smlight SLZB Ultima and Third Reality USBC-Dongle?: Connectivity is one of the clearest differences: Smlight SLZB Ultima lists USB, Ethernet, 2.4 GHz Wifi, while Third Reality USBC-Dongle lists USB.
Who should buy Smlight SLZB Ultima?: Choose Smlight SLZB Ultima if your priority is connectivity and zigbee router and that matters more than matter bridge.
Who should buy Third Reality USBC-Dongle?: Choose Third Reality USBC-Dongle if your priority is matter bridge and that matters more than connectivity.

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