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IKEA's new smart plug to track power consumption could launch soon
(www.notebookcheck.net)
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
With Tasmota on the S31, you can disable the ability to turn it off. I have a few set up that way to prevent them from being turned off.