Dongles · Head to head

Smlight SLZB-MR4 vs Sonoff ZBDongle-E

Full Smart Dongles comparison in 2026

Updated August 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
Smlight SLZB-MR4 beats Sonoff ZBDongle-E in 2026, with its clearest edge on rating, power, and connectivity. The main reason it wins is rating, power, and connectivity, and thread border router and antenna gain strengthen that case. Sonoff ZBDongle-E is the better fit only for buyers who prioritize warranty above everything else here. That is why Smlight SLZB-MR4 wins the verdict here.
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FeatureSmlight SLZB-MR4Sonoff ZBDongle-EWinner
Rating5.04.6Smlight SLZB-MR4
Warranty1 year2 yearsSonoff ZBDongle-E
PowerUSB, PoEUSBSmlight SLZB-MR4
ConnectivityUSB, Ethernet, 2.4 GHz WiFiUSBSmlight SLZB-MR4
Thread Border RouterYESNOSmlight SLZB-MR4
Antenna Gain+5dBi2 dBiSmlight SLZB-MR4
Dual NetworkYESNOSmlight SLZB-MR4
Bluetooth ProxyYESNOSmlight SLZB-MR4
Zigbee Chip ModelEFR32MG26 / CC2674P10EFR32MG21Different strengths
Amplifier Gain+20dB+20dBmDifferent strengths
Zigbee RouterYESYESTie
Z-Wave ControllerNONOTie

Frequently Asked Questions

Which is better overall: Smlight SLZB-MR4 or Sonoff ZBDongle-E?

Smlight SLZB-MR4 has the stronger overall profile in this comparison, especially for rating, power, and connectivity.

What is the biggest difference between Smlight SLZB-MR4 and Sonoff ZBDongle-E?

Rating is one of the clearest differences: Smlight SLZB-MR4 lists 5.0, while Sonoff ZBDongle-E lists 4.6.

Who should buy Smlight SLZB-MR4?

Choose Smlight SLZB-MR4 if your priority is rating and power 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 rating.

Full comparison table

Compare all 35 Dongles side by side

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  • 35 Dongles
  • 32 specs compared
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