Smlight SLZB-MR2 vs Sonoff ZBDongle-E

Full Smart Dongles comparison in 2026

Updated April 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
In this 2026 comparison, Smlight SLZB-MR2 comes out ahead overall. Its clearest strengths are power, connectivity, and thread border router, and it still looks stronger on antenna gain and dual network. You should still consider Sonoff ZBDongle-E if price and warranty matters more than raw overall balance. As a general recommendation, Smlight SLZB-MR2 comes out on top.
vs
FeatureSmlight SLZB-MR2Sonoff ZBDongle-EWinner
Price$102.99$26.99Sonoff ZBDongle-E
Warranty1 year2 yearsSonoff ZBDongle-E
PowerUSB, PoEUSBSmlight SLZB-MR2
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSBSmlight SLZB-MR2
Thread Border RouterYESNOSmlight SLZB-MR2
Antenna Gain+5dBi2 dBiSmlight SLZB-MR2
Dual NetworkYESNOSmlight SLZB-MR2
Bluetooth ProxyYESNOSmlight SLZB-MR2
Zigbee Chip ModelEFR32MG21 / CC2652PEFR32MG21Different strengths
Amplifier Gain+20dB+20dBmDifferent strengths
Rating4.64.6Tie
Zigbee RouterYESYESTie
Winner
Smlight

Smlight SLZB-MR2

$102.99
BUY NOW
  • + Power: USB, PoE
  • + Connectivity: USB, Ethernet, 2.4 GHz Wifi
  • + Thread Border Router: YES
  • - Price: $102.99 vs $26.99
  • - Warranty: 1 year vs 2 years

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-MR2 or Sonoff ZBDongle-E?
Smlight SLZB-MR2 has the stronger overall profile in this comparison, especially for power, connectivity, and thread border router.
What is the biggest difference between Smlight SLZB-MR2 and Sonoff ZBDongle-E?
Price is one of the clearest differences: Smlight SLZB-MR2 lists $102.99, while Sonoff ZBDongle-E lists $26.99.
Which one looks better on price?
Smlight SLZB-MR2 is listed at $102.99, while Sonoff ZBDongle-E is listed at $26.99. Sonoff ZBDongle-E (better spec).
Who should buy Smlight SLZB-MR2?
Choose Smlight SLZB-MR2 if your priority is power and connectivity and that matters more than price.
Who should buy Sonoff ZBDongle-E?
Choose Sonoff ZBDongle-E if your priority is price and warranty and that matters more than power.
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