So I installed this lock which was pretty simple and easy to do. This thing is wonderful. Just a few weeks ago my wife had locked herself out of the house and I was an hour away to let her in. She had to wait out in the cold for a family member to get to her. This should never happen with this lock. I also was able to put my it where my mother and mother in law also can just touch and unlock so if they ever need to get in and I am not at home. This thing is amazing and I love when my hands are full, I do not have to jingle around for keys to unlock it. I am still learning different things on it, but so far it is wonderful and I have nothing bad to say about it at all.