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While these projects are cool it’s worth noting IKEA since released a Matter capable version in the last year. It is 3 times the cost though (US $50 it seems). Still quite cheap on the whole I think.

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Worth mentioning for those who were ignorant like me: Matter looks like an IoT protocol that’s cross platform across most home sensors and controllers (Apple home, Google nest, Alexa, etc)

All I'm interested in is whether it can be cloud free or not.

DIY Wifi addition obviously can, but not so sure of the alternative.

Matter devices are required to work without cloud: https://matter-smarthome.de/en/benefits/benefits-of-matter-1...

You can also use them with HomeKit, whatever androids is called and with home assistant. All local.

> Matter can also work entirely on your local network, so gadgets should respond more quickly and work even if your internet is down.

https://www.theverge.com/22832127/matter-smart-home-products...

Oh interesting, had not seen that, the "Vindstyrka"

https://www.ikea.com/us/en/p/vindstyrka-air-quality-sensor-s...

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