Nabu Casa Home Assistant Connect ZWA-2 vs Smlight SLZB-07 MG24

It hinges entirely on which protocol you need. The Connect ZWA-2 is the better choice for Z-Wave devices, backed by a higher owner rating and a stronger antenna. The SLZB-07 MG24 is the better choice for Zigbee and Thread, and it also costs less.

They cover entirely different wireless protocols. The Connect ZWA-2 is a Z-Wave 800 controller with no Zigbee support at all. The SLZB-07 MG24 is a Zigbee 3.0 coordinator and router with Thread border router support, and it has no Z-Wave controller whatsoever.

The Nabu Casa Home Assistant Connect ZWA-2 posts the higher antenna gain figure of the two, helped by being purpose-built Z-Wave hardware from the Home Assistant team. The SLZB-07 MG24 still covers a typical home well for Zigbee, with its own external antenna and Thread border router support layered on top.

No to both. The SLZB-07 MG24 is Zigbee and Thread only, and the Connect ZWA-2 is Z-Wave only. If you need both protocols in your smart home, you would run one of each rather than expecting either single dongle to cover everything.

Anyone with a Z-Wave-based Home Assistant setup who wants official first-party hardware, a strong antenna and the higher owner rating should pick the Connect ZWA-2 over a Zigbee-focused alternative.

Buyers running Zigbee devices, or anyone who also wants a Thread border router for Matter gear, will find the SLZB-07 MG24 the better and more affordable fit, since the Connect ZWA-2 cannot serve that role at all.