Product review (5 stars): Works Well
This system is really cool I use it to monitor a vacation house. It is so sensitive that it detects changes in temp of 0.1degree F and 0.1% relative humidity. It plots themp and humidity over a week. It is so sensitive that it even detects the degree in temp between the furnace cycles so I can get a sense of how frequently my furnace is cycling. I get a text and Email if power goes out and have the graph of what temp was when the power goes out. The only shortcoming is that  since this uses the internet if power does go out you loose the ability to remotely monitor temp right when you need it. In a sense this is not as crucial as with no power you have no furnace anyway. Overall I find it a really neat device. I have not yet gotten a temperature alert yet via text and email but the system is set up to do this. The only problem is that when power was out and then went back on the system did not automatically restart monitoring for a few days