We've been using this lock for only 24 hours but it is working beautifully for our needs. It was simple to install, my 13 year old did most of the work with my husband's guidance. My favorite feature of it is that you can delay the lock up to 99 seconds so if you're running in and out, you don't have to enter the code every time. This is a high-quality lock with many features. We installed this on the door from our garage going into our house. It's a door that we rarely ever locked but I find comfort knowing that it will be locked at all times now.