Product review (1 stars): TRASH.  BUY from P3 International.
The Inkbird ITH-10 quit working after three weeks.  The screen shows parts of numbers so it is essentially worthless.  Not worth returning.  REI used to sell max-min thermometers and I have one that works just fine after 20 years.  Why can't Inkbird figure this out?  After buying this trash, I found the info on the good ones:  Mini Hygro-Thermometer made by P3 International, [...]  They are the size of a matchbox and about $13 delivered.  I just bought three.  Amazon does not carry them but should.