This is the third temperature sensor I've bought, and it works really well with the hub and the Xiaomi app. Ideal for keeping track of the temperature and humidity in any room in the house. You can also check the temperature history. The battery lasts an average of 2 years.
I love this device. It could be a tad too technical for some I get that. Take your time, work steadily and back up as you go. You'll find this device fits everything you will need. New major updates and core updates released that have now changed everything. Buy it, and don't look back.