Product review (1 stars): Most inaccurate unit ever purchased and cannot be adjusted
I purchased this for my home in Florida in order to maximize my ability to monitor humidly compared to other units I have. The min/max and dewpoint display combined with the brand name were all promising. However my poor experience was similar to another review here. The unit displays 10-15% lower than the other 3 units I own that all read within 5%. No problem I thought, I'll use the calibration screw to adjust and all will be well. The screw was inoperable with no impact on the display value. Thanks to Amazon's great return policy for defective items, it is now on its way back and I will stick with lower cost/more accurate units that are available.