Smlight SLZB-MR2 vs Smlight SLZB-MR4

Full Smart Dongles comparison in 2026

Data from Amazon and official Smlight site.
2026 verdict
Across the full comparison in 2026, this remains a very tight race. Choose Smlight SLZB-MR2 if its strongest specs and its broader overall balance matter more to you. The overall result stays balanced because each product solves a different problem better. Both products still have a valid case, just for different buyers.
FeatureSmlight SLZB-MR2Smlight SLZB-MR4Winner
Zigbee Chip ModelEFR32MG21 / CC2652PEFR32MG26 / CC2674P10Different strengths
Warranty1 year1 yearTie
PowerUSB, PoEUSB, PoETie
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSB, Ethernet, 2.4 GHz WifiTie
Zigbee RouterYESYESTie
Z-Wave ControllerNONOTie
Thread Border RouterYESYESTie
Matter BridgeNONOTie
Amplifier Gain+20dB+20dBTie
Antenna Gain+5dBi+5dBiTie
Dual NetworkYESYESTie
Bluetooth ProxyYESYESTie
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  • + Smlight SLZB-MR4 has a viable feature set with no obvious deal-breaker in the available data.

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-MR2 or Smlight SLZB-MR4?
This one is close. Smlight SLZB-MR2 leads in some areas, while Smlight SLZB-MR4 leads in other areas.
What is the biggest difference between Smlight SLZB-MR2 and Smlight SLZB-MR4?
Zigbee Chip Model is one of the clearest differences: Smlight SLZB-MR2 lists EFR32MG21 / CC2652P, while Smlight SLZB-MR4 lists EFR32MG26 / CC2674P10.
Who should buy Smlight SLZB-MR2?
Choose Smlight SLZB-MR2 if your priority is its specific strengths and that matters more than the competing advantages.
Who should buy Smlight SLZB-MR4?
Choose Smlight SLZB-MR4 if your priority is its specific strengths and that matters more than the competing advantages.
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