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 Add motion sensor to turn on bathroom exhaust fan
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rjk
Starting Member

USA
2 Posts

Posted - 06/09/2021 :  12:04:39 PM  Show Profile  Reply with Quote
It seems like having the fan on a motion sensor would be the best, otherwise the we all forget to turn it on.

I would like to use a very small motion sensor that I would tuck into the shower niche (this area stays dry) and have it turn on power to the 120V fan. Does anyone have a great idea for the specific motion sensor, and how it could switch on power to the fan?

rjk

oberkc
Moderator

USA
4159 Posts

Posted - 06/09/2021 :  5:20:48 PM  Show Profile  Reply with Quote
I use Insteon devices, including motion sensors. If the fan is on a switch, replace it with a smart switch and add a motion sensor to turn on the switch. Insteon devices can do this. You may be able to find a switch with a built-in motion sensor.

https://www.smarthome.com/products/insteon-motion-sensor-ii

https://www.smarthome.com/collections/insteon-switches/products/switchlinc-on-off-insteon-2477s-remote-control-switch-dual-band-white

https://www.homedepot.com/p/Leviton-Decora-Motion-Sensor-In-Wall-Switch-Auto-On-2-5-A-Single-Pole-White-R12-IPS02-1LW/203826482
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rjk
Starting Member

USA
2 Posts

Posted - 06/10/2021 :  06:49:08 AM  Show Profile  Reply with Quote
very interesting, thanks.

Some additional details are that I don't want the whole bathroom covered by the motion sensor, just the shower. There is a small niche in the shower (stays dry) where I want to tuck the motion sensor. So the motion sensor needs to be very small so the niche wall hides it from areas outside the shower.

I like that this can work on a battery - saves me some difficult drilling for wires.

I may order one since it seems like a good chance of working - unless you may have another thought.

Thanks again!

rjk
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oberkc
Moderator

USA
4159 Posts

Posted - 06/12/2021 :  04:27:53 AM  Show Profile  Reply with Quote
Sounds as if a separate motion sensor is the way to go, then.

I also don't want to suggest that Insteon devices are the only option, either. These are just the ones I use. Having said that, they have the seemingly-unique ability to work and link without having a dedicated controller, and are not dependent on the cloud.
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