Smlight SLZB-MRW10 vs Sonoff Dongle Lite MG21

Full Smart Dongles comparison in 2026

Updated March 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
Taken as a whole in 2026, Smlight SLZB-MRW10 wins this matchup. It has the clearer edge on power, connectivity, and z-wave controller, and it stays ahead on antenna gain and dual network. Sonoff Dongle Lite MG21 is the better fit only for buyers who prioritize its specific feature mix above everything else here. Overall, Smlight SLZB-MRW10 makes more sense for most people.
vs
FeatureSmlight SLZB-MRW10Sonoff Dongle Lite MG21Winner
PowerUSB, PoEUSBSmlight SLZB-MRW10
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSBSmlight SLZB-MRW10
Z-Wave ControllerYESNOSmlight SLZB-MRW10
Antenna Gain+5dBi+3dBiSmlight SLZB-MRW10
Dual NetworkYESNOSmlight SLZB-MRW10
Bluetooth ProxyYESNOSmlight SLZB-MRW10
Zigbee Chip ModelCC2652P10EFR32MG21Different strengths
Amplifier Gain+20dBi+20 dBmDifferent strengths
Warranty1 year1 yearTie
Zigbee RouterYESYESTie
Thread Border RouterYESYESTie
Matter BridgeNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-MRW10 or Sonoff Dongle Lite MG21?
Smlight SLZB-MRW10 has the stronger overall profile in this comparison, especially for power, connectivity, and z-wave controller.
What is the biggest difference between Smlight SLZB-MRW10 and Sonoff Dongle Lite MG21?
Power is one of the clearest differences: Smlight SLZB-MRW10 lists USB, PoE, while Sonoff Dongle Lite MG21 lists USB.
Who should buy Smlight SLZB-MRW10?
Choose Smlight SLZB-MRW10 if your priority is power and connectivity and that matters more than the competing advantages.
Who should buy Sonoff Dongle Lite MG21?
Choose Sonoff Dongle Lite MG21 if your priority is its specific strengths and that matters more than power.
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