I would like to control my Bathroom exhaust fan to do this: Turn on when motion is detected - done Turn off after motion stops but only if humidity is below a certain threshold Stop after 30 minutes, after the last motion detect. Appreciate if some could point me to a solution.

Tried using the “Smart Humidity Fan” solution - but looks like I will need to replace my DHT22 its stuck at 97.1% humidity - goes from -1% to 97.1% and stays there until the bathroom is dry. [image] impalaguy1230: I had an Aeotec Multisensor and you could fiddle with the poll intervals. But it …

I used webcore to make a piston: If the fan is on, and the light is changed to off, wait 45 minutes then turn the fan off. This allows the fan to run for a limited time after someone leaves the bathroom after a shower, or for some “other” reason that does not involve humidity.

I pretty much did something similar to this. My bathroom lights turn on with motion and turn off after 5 minutes of no motion. My fans are on a timer to turn off I think 20 minutes after the light goes off whether its turned of manually (which we usually do) or if its left to time out from motion …

That app I posted above actually uses humidity levels from the Aeon Multisensor 6 I have installed in there. If it rises too fast, indicating a hot shower, then the fan turns on. It turns off when the humidity goes back down. It is pretty hands off as far as I am concerned. It has been working g…

This sounds really cool but only solves part of the problem… I have not been able to find a Z-Wave or Zigbee bad smell sensor…:nauseated_face:

Maybe a sensor for methane gas? Haha.:grinning:

Thanks - that app worked really well as a starting point for me. It didn’t have motion sensor trigger so I added it. I have also developed a fault in my DHT22 sensor it goes from -1 to 97.1 and back - at around 60% humidity level with no stops in between. Which actually works out well for me beca…

Does anyone use this automation? It looks like it’s supposed to monitor the switch state and if turned on manually, it is supposed to turn off the fan after X minutes. Mine doesn’t seem to be doing that correctly. Is there something I’m missing? The switch is a GE Zwave+ switch.

[image] Spyderturbo007: Does anyone use this automation? It looks like it’s supposed to monitor the switch state and if turned on manually, it is supposed to turn off the fan after X minutes. Mine doesn’t seem to be doing that correctly. Is there something I’m missing? The switch is a GE Zwave+ …

That’s odd. It doesn’t seem to be working with my GE switch. I’m using the 12722 switch. If I understand your post correctly, ST removed the ability for the device to monitor manual state changes for devices and then take action based on that change? I installed webCoRe this morning, but I feel …

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How do I turn off a bathroom exhaust fan when humidity is below a threshold

SmartApps & Automations

rontalley (Ron Talley) September 3, 2019, 6:35pm 23

Yep that’s the one. Depending on where you install it, you can opt to hard-wire it with a little bit of soldering. I’ve done this to as many sensors as I could. Can use the same power adapter for a bunch of these sensors as they hardly take any juice. Will save money and time changing batteries!

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How do I turn off a bathroom exhaust fan when humidity is below a threshold

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