Product review (4 stars): Works fine - replacement for old humidistat
This was the first winter for this humidistat, and it worked fine. Curiously, the hole pattern for this new Aprilaire was different from the old one, requiring drilling two new holes. This model stands away from the wall, and if you look closely behind it, you can see the screws, and I did have to spackle the old holes, as the old holes will be visible on close scrutiny, too. But it is not a big deal.