Be aware, some of the smart thermostats (like nest) will go into "energy saving" mode if they don't detect motion, which would push the max temp up. I am sure there is a hold setting or way to integrate it to be more of a sure thing, but I haven't had great success there without logging into the app from my phone.Nest already has built in stuff for this. So it’s kind of a redundancy setup in case Nest’s safety temp stuff doesn’t kick in.