Product review (5 stars): So far, so good!
Been installed one week and so far, so good.  Installation was not too difficult, just have the batteries installed and follow the steps exactly.  The base unit paired with the remote sensor and the app setup worked fine.  I purchased a second sensor with water sensor and that paired up without a problem as well. Use it to keep an eye on my vacation house 3 hours away.  The app displays the current readings but also has a graphical and tabular display to show the history over time.  Also sends email alerts if the temperature goes outside of an acceptable range (you set the range) or a water leak is detected...but I haven't verified that the email feature works.