Nice System
I have been using this system for about two years now. I've been using the temperature/humidity sensors, mostly to monitor conditions in areas of my house where I grow orchids. I just recently added several more water sensors so that I can monitor for water leaks in various areas that I access rarely, after discovering a hot water tank that had been leaking for a very long time, causing a great deal of damage. One of them signaled water about a month after installation, enabling me to get someone over right away to find and repair a number of small leaks in the zinc roof over my attic.
Easy to install and set up, flexible, and effective!