I live in a property with five floors, one flat on each floor. We want to install a Nest Protect system, with one Protect on each floor. We want to have these Protects interlinked so that if one sounds they all sound.
The issue is that we don't have a single WiFi system that stretches through the whole building: each Protect needs to link to a different WiFi. Is it possible for these five Protects to be interlinked even though they are connected to different WiFis?