this post was submitted on 04 Aug 2023
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Shower Extractor Fan (lemdro.id)
submitted 1 year ago by [email protected] to c/[email protected]
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I was looking to automate a shower Extractor Fan as I don't find the ones with the inbuilt humidity sensor very good.

So: Aqara Humidity sensor placed somewhere in the shower. Near the fan. Occupance sensor. Sonoff switch to trigger the fan.

If the humidity is > than threshold and the occupance sensor is active = turn on fan.

I was looking for a good ZigBee occupancy sensor though , the aqara fp sensor look all wired and not battery operated.

Maybe this one : https://m.aliexpress.com/item/1005004692544265.html?spm=a2g0n.detail.1000014.1.7b5e54e06iUEhv&gps-id=platformRecommendH5&scm=1007.14452.335518.0&scm_id=1007.14452.335518.0&scm-url=1007.14452.335518.0&pvid=a535df07-7d30-43fb-98f1-494d4d841170&_t=gps-id:platformRecommendH5,scm-url:1007.14452.335518.0,pvid:a535df07-7d30-43fb-98f1-494d4d841170,tpp_buckets:668%232846%238108%231977&pdp_npi=4%40dis%21EUR%2159.06%2147.25%21%21%2163.21%21%21%402101c6e316911769720411084efc92%2112000030122162722%21rec%21IE%21%21A&search_p4p_id=202308041222520688160562971647313150_0

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[–] [email protected] 7 points 1 year ago

Rather than activate the fan over an absolute humidity threshold with occupancy, I’d recommend setting the fan to turn on when the room’s humidity is a certain amount more than the ‘normal’ humidity and ignore presence.