These thermometers give you a piece of mind by monitoring the temperate of your home, refrigerator, etc. & will notify you immediately anywhere if there's a problem. Who wants a refrigerator or furnace to break down when you're away?
Purchased this item so I could monitor the temperature in my garage which is located away from my residence.
I wanted a good run time before buying a second module. After six months of use, the first one is working great and very accurate. I have since added a second unit. Easy setup is also worth a lot. Very much recommend.
I bought 4 of these and use them to monitor temperatures remotely. They stay connected, give me good historical data and the batteries last a good while. The seem accurate to me also. I want more and will be buying them.