Product review (5 stars): If you've invested in high-end photography gear, this is something you need.
Very pleased with this purchase.  I noted that some reviewers had issues with the accuracy of the humidity reading on the unit.  Like others, I also purchased a separate humidity meter and placed it in the unit.  My dry cabinet stays within 1-2% of the set value, a bit higher than the reading from the humidity meter but hardly an issue.  Plenty of room in the cabinet for all my lenses (10+) and a couple of bodies, with room to spare for future lenses, etc.  For the cost, I wouldn't hesitate to recommend this to protect your gear from potential mold problems.