Got To Love My Hygrometers

[CigarNut]

I like the HygroSet II's as you can calibrate them and they are not too expensive. I use the Boveda 65% packs to calibrate mine. So far so good.

The other thing you need to remember to do is replace the batteries periodically. Don't wait for the battery to die -- and potentially corrode -- just replace them once a year.