Smlight SLZB-MR4 vs Sonoff Dongle-PZG23

Full Smart Dongles comparison in 2026

Updated April 2026
Data from Amazon and official Smlight and Sonoff sites.
2026 verdict
In 2026, Smlight SLZB-MR4 stands out as the more complete option. The comparison tilts its way because of power, connectivity, and zigbee router, with thread border router and antenna gain keeping it in front. There is still a case for Sonoff Dongle-PZG23, but mainly if z-wave controller is what you value most. As a general recommendation, Smlight SLZB-MR4 comes out on top.
vs
FeatureSmlight SLZB-MR4Sonoff Dongle-PZG23Winner
PowerUSB, PoEUSBSmlight SLZB-MR4
ConnectivityUSB, Ethernet, 2.4 GHz WifiUSBSmlight SLZB-MR4
Zigbee RouterYESNOSmlight SLZB-MR4
Z-Wave ControllerNOYESSonoff Dongle-PZG23
Thread Border RouterYESNOSmlight SLZB-MR4
Antenna Gain+5dBi2 dBiSmlight SLZB-MR4
Dual NetworkYESNOSmlight SLZB-MR4
Bluetooth ProxyYESNOSmlight SLZB-MR4
Warranty1 year1 yearTie
Matter BridgeNONOTie
Amplifier Gain+20dB+20dBTie
Winner
Smlight

Smlight SLZB-MR4

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  • + Power: USB, PoE
  • + Connectivity: USB, Ethernet, 2.4 GHz Wifi
  • + Zigbee Router: YES
  • - Z-Wave Controller: NO vs YES

Frequently Asked Questions (FAQ)

Which is better overall: Smlight SLZB-MR4 or Sonoff Dongle-PZG23?
Smlight SLZB-MR4 has the stronger overall profile in this comparison, especially for power, connectivity, and zigbee router.
What is the biggest difference between Smlight SLZB-MR4 and Sonoff Dongle-PZG23?
Power is one of the clearest differences: Smlight SLZB-MR4 lists USB, PoE, while Sonoff Dongle-PZG23 lists USB.
Who should buy Smlight SLZB-MR4?
Choose Smlight SLZB-MR4 if your priority is power and connectivity and that matters more than z-wave controller.
Who should buy Sonoff Dongle-PZG23?
Choose Sonoff Dongle-PZG23 if your priority is z-wave controller and that matters more than power.
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