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Z-Wave Long Range and its mile-long capabilities will arrive next year - Ars Technica
(arstechnica.com)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
It's a buildings automation standard. The products that implement it are usually expensive
Thanks, that sounds like a correct answer.