this post was submitted on 24 Jun 2024
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I had a humidity switch in ours a while ago (not smart) and it would turn on too much even if a shower wasn't running but our windows were open. And, enough humidity was in the air. So that didn't work out great.
It was a self contained deal not a smart switch though
I got the enbrighten switches set up on the bathroom fan. After a few months of observing the humidity changes I settled on triggering the fan based on the derivative of the humidity. I found that 2%/s with 2min of averaging works well, no false positives so far.