BAQSOO Wireless Thermometer Hygrometer, Mini Bluetooth Humidity and Temperature Sensor with Data Export for iOS Android, Temp Humidity Monitor for House, Wine Cigar, Living Room, Baby Room-1 Pack

I love how small and unobtrusive this thing is, but the design means nothing when the thing doesn’t work. It tracked for a month or two, then I started to notice that all readings were the same temp, and significantly higher than they should have been. I tried replacing the battery, but that did nothing. I regret spending money on this thing. It ended up in the trash.

The unit is small, inexpensive, and reasonably accurate. However, if you want to export a csv file of the temperature and humidity readings, you'll find that the file is not in csv format and is unreadable. Maybe a bug? If you don't need this history log function, you'll be satisfied. Edit: I did manage to open this file in excel although Excel reported it as an unsafe file because the format did not match the csv extension. So I raised the rating to 5 stars

After three months one working fine and one is dead. You get what you pay for. Set your expectations low and you will be disappointed less.

Decent for almost two months. 16.2% high on humidity reading now. This is the most expensive cr2032 you can buy, as thats all its worth.....

Everything worked well battery died in 2 months of use.

Happy