Product review (1 stars): Hygrometer not accurate
I just got the unit and humidity keeps reading 10% which did not seem right.  My friend has same device and we left them in same room for 12 hours. Hers read 28% and mine stuck at 10%. So I got a defective unit.  I tried to return and to my surprise it said no returns even though I just got it two days ago. If you just want temp it is fine but the humidity sensor does not work.