I purchased this lock for my front door because of the automatic locking feature. my sons were always leaving the front door unlocked, our normal family area was on the other side of the house and anyone could enter. This lock has worked flawlessly for over three years. The other nice feature is the ability to set a second lock code for someone and then take it out when it is not needed. We set the code for a cleaning service on the day they are to clean and remove it afterwards. The installation was easy, read the instructions completely before installing!