I’ve been using mine for about six months now. I rent rooms in my house so it’s very helpful. Having a lock with a key code that I can change. The other great thing is that I have a lot of family come over, so I’m able to give everybody their own code. Whenever somebody Unlocks the door, I got an email sent to my phone or notification, telling me Who unlocked the door. It works great and I like being able to access the lock from my phone. I was also able to set the lock to automatically relock after somebody unlocks it, after 10 minutes. I like that feature because it gives me time to bring in groceries before it relocks again. great product, I don’t think I could ever go back.