Dongles · Head to head

Smlight SLZB-MR5U vs Sonoff ZBDongle-E

Full Smart Dongles comparison in 2026

Updated June 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
Smlight SLZB-MR5U beats Sonoff ZBDongle-E in 2026, with its clearest edge on power, connectivity, and thread border router. Its biggest wins come from power, connectivity, and thread border router, and antenna gain and dual network adds more confidence to the verdict. The only strong reason to choose Sonoff ZBDongle-E is if warranty is more important to you than the overall verdict. That keeps the verdict firmly in favor of Smlight SLZB-MR5U.
vs
FeatureSmlight SLZB-MR5USonoff ZBDongle-EWinner
Warranty1 year2 yearsSonoff ZBDongle-E
PowerUSB, PoEUSBSmlight SLZB-MR5U
ConnectivityUSB, Ethernet, 2.4 GHz WiFiUSBSmlight SLZB-MR5U
Thread Border RouterYESNOSmlight SLZB-MR5U
Antenna Gain+5dBi2 dBiSmlight SLZB-MR5U
Dual NetworkYESNOSmlight SLZB-MR5U
Bluetooth ProxyYESNOSmlight SLZB-MR5U
Zigbee Chip ModelEFR32MG24EFR32MG21Different strengths
Amplifier Gain+20dB+20dBmDifferent strengths
Zigbee RouterYESYESTie
Z-Wave ControllerNONOTie
Matter BridgeNONOTie

Frequently Asked Questions

Which is better overall: Smlight SLZB-MR5U or Sonoff ZBDongle-E?

Smlight SLZB-MR5U has the stronger overall profile in this comparison, especially for power, connectivity, and thread border router.

What is the biggest difference between Smlight SLZB-MR5U and Sonoff ZBDongle-E?

Warranty is one of the clearest differences: Smlight SLZB-MR5U lists 1 year, while Sonoff ZBDongle-E lists 2 years.

Who should buy Smlight SLZB-MR5U?

Choose Smlight SLZB-MR5U if your priority is power and connectivity and that matters more than warranty.

Who should buy Sonoff ZBDongle-E?

Choose Sonoff ZBDongle-E if your priority is warranty and that matters more than power.

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