Product review (5 stars): These are excellent meters!
Very high quality and 5 star customer service.
I own 6 Caliber III humidity meters.
Ordered an AcuRite on a friends recommendation.
When it arrived I checked it against my Calibers. It read 16% high!
I contacted the company and asked it it could be calibrated.
They said no, and had me re-do the reboot.
I explained that I had six meters telling me the reading was off and those meters were within 2% of each other.
They sent me a new meter. Did not ask me to return the old one.
Long story short. the new one read the same as the first one,.
So, I bought a "Boveda" pack and tested them all.
The AcuRites are spot on.
All of the Calibers were off, and by app. the same amount.
I owe AcuRitre an apology, and a meter.
Sending them $$ would probably screw up their accounting, so I bought 2 more meters and will recommend them highly.