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Smart button as a connected doorbell?
(lemmy.world)
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
Since this is pretty straight forward, I think most any “single click” Zwave switch would work? I love IKEAs stuff but I think it’s mostly Zigbee.