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Outdoor Temperature Sensor
(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
I have a couple of these too, they are quite convenient in that they do motion, luminescence, and temperature. I have two and combine them in a single sensor to average out for better accuracy.