Roost Smart Water and Freeze Detector with WiFi & App0
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Here is another smart tool that helps you monitor conditions in your home and avoid costly accidents. The Roost Smart Water and Freeze Detector detects water leaks, humidity, and high/freezing temperatures and alerts you on your smartphone when there are unexpected results.
You can use this tool to alert your friends when you are away. The app lets you set temperature and humidity ranges to track. It runs for 3 years on AA batteries.[Source]
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