Thanks for the replies, from what I can tell perhaps some UDP & mesh will do what I want - basically the use case is in a connected shipboard environment, but with a slow and somewhat unreliable internet connection via Satellite. A change of course can cause the internet to drop for anywhere between moments and hours. I’d like to set up an environment where local notification can occur between two distant zones, regardless of whether we are currently connected to the cloud or not. Any necessary cloud communications would get cued until there is a confirmed cloud connect.
The only reason not to do a full mesh installation is that the ship structure, made of steel, is a horrible RF environment, and I expect would take a large number of mesh units to do the job, and there is already a good wifi plus Ethernet network onboard.
J
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