We originally purchased one of these for our back door, after about a year, we decided to install one on the front door as well, and I'm seriously considering another for the service door on our detached garage.

Both of the locks in use were easy to install, the directions provided are very well written and the illustrations are clear and easy to understand. Both locks have also performed flawlessly, the only thing that I've needed to do is to file the strike plate on the back door to ease deadbolt engagement. The only (minor) thing is that the finish on the outside component of the back door lock has become discolored with time, but everything still works just fine.

We just love that we can't lock ourselves out of the house with these, that we can set codes for other people to enter the house when we're not here (and then erase them), and that the lock cylinders are well made and pick resistant. All in all, a great product!