Aqara Humidity Shower Sensor to Automate Fan?

Aqara Products
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I’d like to put a humidity sensor in the shower, near the ceiling where it won’t get wet. I have a humidity sensing and timing standard wall switch, but it doesn’t sense humidity from the shower until the door is open. I’ve used small smart relays from Shelly for turning on standard switches (you just put them in the box with the switch) but I’m looking for an Aqara way to do this so the automation works. Most of our existing automations run on Google Home, we have Aqara hubs around the house that tie into Apple Homekit as well. Thoughts on how this could be accomplished? I don’t want to lose the hardwired fan switch, and I’m not interested in using Home Assistant - been down that road and it was too involved.

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I recently discovered my bathroom fan is powered by a standard outlet, so I just popped a smart plug in it and set the automation to turn it on and off based on the humidity. I’m not sure how that would tie in with your hard wired switch though……

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That’s what I plan to do. Im going to replace the current switch with the H2 2channel to control the light and fan. Then use the humidity sensor to trigger the fan when needed… and the light on a motion sensor. I’m hopeful it’s as easy as I make it sound!:rofl:

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How long does the battery last on those things ?

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I use an Aqara humidity sensor and HomeKit to turn the fan on and off at set humidity levels. My fan is connected to an outlet that I have a smart plug on. I use apple HomeKit automations to control the fan based on the humidity levels.

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Native for up to two or three years, cheap for more than one.

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Are you not in the uk?

I’m from the uk and we are not allowed to fit a standard plug socket in our bathrooms, as I’m also looking for a solution to this.

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I do this but with home assistant, my old Kasa smart switches as the trigger and humidity sensor, so it should be theoretically possible

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Those switches look great. ATM, my house is all Kasa switches which match the humidity switch I have, so I don’t want to replace that.

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This I think is my answer, Homekit can be the bridge between product vendors. I see I can control the newer Shelly relays with Homekit since they support Matter.

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You can use the Aqara relay device. It shos work perfectly.