Power/temperature monitor

What are you guys using to monitor Temps for your pets? This was posted recently

let me clarify what I want. I want to plug in a device in the motorhome that will text my phone or call me if the power goes out or if the temperature rises above a certain point. This is for safety of a dog being left in the motorhome.

Android device manager will let you know the temperature and if a device is charging. It will not do it automatically however.