Changing items metadata very frequently

See Expire Updater [4.0.0.0;4.9.9.9] for how to change the expire metadata (or you can just use install and use the template. The rest is just triggering a rule at the right time to change the metadata (you could use Time Based State Machine [4.0.0.0;4.9.9.9] or Timeline picker to setup heating, light and so on to control the schedule).

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