Smlight SLZB-06 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
In this 2026 comparison, Smlight SLZB-06 comes out ahead overall. It wins the broader comparison through power, connectivity, and antenna gain, while bluetooth proxy helps confirm the result. The only strong reason to choose Sonoff Dongle Lite MG21 is if price and rating is more important to you than the overall verdict. That makes Smlight SLZB-06 the clearer recommendation in 2026.
vs
FeatureSmlight SLZB-06Sonoff Dongle Lite MG21Winner
Price$74.99$19.90Sonoff Dongle Lite MG21
Rating4.54.7Sonoff Dongle Lite MG21
PowerUSB, PoEUSBSmlight SLZB-06
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSBSmlight SLZB-06
Antenna Gain+5dBi+3dBiSmlight SLZB-06
Bluetooth ProxyYESNOSmlight SLZB-06
Zigbee Chip ModelCC2652PEFR32MG21Different strengths
Amplifier Gain+20dB+20 dBmDifferent strengths
Warranty1 year1 yearTie
Zigbee RouterYESYESTie
Z-Wave ControllerNONOTie
Thread Border RouterYESYESTie
Winner
Smlight

Smlight SLZB-06

$74.99
BUY NOW
  • + Power: USB, PoE
  • + Connectivity: USB, Ethernet, 2.4 GHz Wifi
  • + Antenna Gain: +5dBi
  • - Price: $74.99 vs $19.90
  • - Rating: 4.5 vs 4.7

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-06 or Sonoff Dongle Lite MG21?
Smlight SLZB-06 has the stronger overall profile in this comparison, especially for power, connectivity, and antenna gain.
What is the biggest difference between Smlight SLZB-06 and Sonoff Dongle Lite MG21?
Price is one of the clearest differences: Smlight SLZB-06 lists $74.99, while Sonoff Dongle Lite MG21 lists $19.90.
Which one looks better on price?
Smlight SLZB-06 is listed at $74.99, while Sonoff Dongle Lite MG21 is listed at $19.90. Sonoff Dongle Lite MG21 (better spec).
Who should buy Smlight SLZB-06?
Choose Smlight SLZB-06 if your priority is power and connectivity and that matters more than price.
Who should buy Sonoff Dongle Lite MG21?
Choose Sonoff Dongle Lite MG21 if your priority is price and rating and that matters more than power.
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