Product review (1 stars): Digital Humidity sensor problem
Replacing the one I bought and hope the second will work fine. The digital Humidity sensor doesn't work properly from first run- changing up and down every other minute. Jumping from 21-35-23-37-21-33...etc. I expect it to go up while device is working.  Overall like it. The mist flow if very fine and operates very quiet.

03/18/2017- second one stopped working after two months. Sensors are not responding , can't turn it on. Probably need to contact the manufacturer because Amazon return window closed two weeks ago. Very disappointed!