Smlight SLZB Ultima vs Sonoff Dongle Plus MG24

Updated April 2026

Data from Amazon and official Smlight and Sonoff sites.

2026 verdict

For most buyers in 2026, Smlight SLZB Ultima is the safer pick. It builds its lead on connectivity, z-wave controller, and dual network, then backs it up with a stronger showing on bluetooth proxy. Sonoff Dongle Plus MG24 is the better fit only for buyers who prioritize its specific feature mix above everything else here. That is enough to make Smlight SLZB Ultima the better pick for most buyers.

Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

BUY NOW

Sonoff

Sonoff Dongle Plus MG24

$35.90

BUY NOW

Feature	Smlight SLZB Ultima	Sonoff Dongle Plus MG24	Winner
Connectivity	USB, Ethernet, 2.4 GHz Wifi	USB	Smlight SLZB Ultima
Z-Wave Controller	YES	NO	Smlight SLZB Ultima
Dual Network	YES	NO	Smlight SLZB Ultima
Bluetooth Proxy	YES	NO	Smlight SLZB Ultima
Zigbee Chip Model	EFR32MGXX / CC26XXPX	EFR32MG24	Different strengths
Warranty	1 year	1 year	Tie
Power	PoE	USB	Tie
Zigbee Router	YES	YES	Tie
Thread Border Router	YES	YES	Tie
Matter Bridge	NO	NO	Tie

Winner

Smlight

Smlight SLZB Ultima

Price unavailable right now

BUY NOW

+ Connectivity: USB, Ethernet, 2.4 GHz Wifi
+ Z-Wave Controller: YES
+ Dual Network: YES

Sonoff

Sonoff Dongle Plus MG24

$35.90

BUY NOW

- Connectivity: USB vs USB, Ethernet, 2.4 GHz Wifi
- Z-Wave Controller: NO vs YES

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB Ultima or Sonoff Dongle Plus MG24?: Smlight SLZB Ultima has the stronger overall profile in this comparison, especially for connectivity, z-wave controller, and dual network.
What is the biggest difference between Smlight SLZB Ultima and Sonoff Dongle Plus MG24?: Connectivity is one of the clearest differences: Smlight SLZB Ultima lists USB, Ethernet, 2.4 GHz Wifi, while Sonoff Dongle Plus MG24 lists USB.
Who should buy Smlight SLZB Ultima?: Choose Smlight SLZB Ultima if your priority is connectivity and z-wave controller and that matters more than the competing advantages.
Who should buy Sonoff Dongle Plus MG24?: Choose Sonoff Dongle Plus MG24 if your priority is its specific strengths and that matters more than connectivity.

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