this post was submitted on 14 Jul 2023
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alert when aqara temp sensors outside go above or below temp sensor inside (self.homeassistant)
submitted 1 year ago by june to c/homeassistant
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Wondering if this is possible. A quick look through the automations and scenes didn’t pop anything out for me, but it would be nice to know when to open and close my windows throughout the summer based on actual local temp now that I’ve got a couple of the Aqara sensors outside.

The idea is that when the temp on both of the outdoor sensors goes below the temp on the inside sensor, in the afternoon/evening, I’d get an alert to open my windows.

And in the morning I’d like an alert to close my windows when the outside temp and inside temp are the same.

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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

I have a similar automation setup to notify when the AC is running while the temperature is cooler outside. You could create an automation with a time based trigger (run every 5 mins) with a value template in the Conditions (along with any other conditions like only in the daytime, if blinds are open, etc):

{{ states('sensor.thermostat_current_temperature')|float>state_attr('weather.home', 'temperature')|float }}

And then in Actions: call service - Notifications: send via mobile app

Mine only differs in that it triggers based off the AC turning on.