Smlight SLZB-MRW10 vs Sonoff Dongle Lite MG21

The Smlight SLZB-MRW10 wins clearly, adding Z-Wave, Ethernet and PoE placement, dual-network mode, a Bluetooth proxy and stronger antennas. The Sonoff Dongle Lite MG21 wins only on price as a simple, budget USB Zigbee coordinator.

Protocol coverage and connectivity. The Smlight SLZB-MRW10 runs Zigbee, Thread and Z-Wave from one network-connected device, while the Sonoff Dongle Lite MG21 is a USB-only Zigbee and Thread stick with no Z-Wave and no network placement.

Yes. Both the Smlight SLZB-MRW10 and the Sonoff Dongle Lite MG21 act as a Zigbee 3.0 coordinator and Thread border router. The MRW10 goes further with a Z-Wave 800 controller and can run Zigbee and Thread simultaneously via dual-network mode.

The Smlight SLZB-MRW10, which connects over USB, Ethernet, Wi-Fi and PoE so it can be mounted anywhere on the network. The Sonoff Dongle Lite MG21 is USB-only, though it ships with a USB extension cable to help placement and reduce interference.

Buy the Smlight SLZB-MRW10 if you want one coordinator that runs Zigbee, Thread and Z-Wave together for Home Assistant, with flexible Ethernet or PoE placement, dual-network mode, a Bluetooth proxy and strong antennas.

Buy the Sonoff Dongle Lite MG21 if you want the cheapest, simplest way into a Zigbee smart home, a compact, nearly plug-and-play USB coordinator (or extra router) for Home Assistant that comes with a USB extension cable.