Z-Wave creates a self-healing mesh network where every device acts as a signal repeater. Unlike Wi-Fi where every device must communicate directly with the router, Z-Wave devices pass signals between each other — giving better coverage throughout your home, around walls, floors and obstacles. Crucially, if your internet goes down you can still control your smart home locally. Z-Wave also supports direct device associations — devices communicate directly with each other, so even if the gateway fails, your automations keep running.