(This review was collected as part of a promotion.) Ive been using the Weiser Powerbolt 3 deadbolt on my exterior door for the past week and it has been amazing. Installation and set up only took a few minutes once i removed my existing dumb deadbolt. I like the fact that you can set it to auto lock, give one time codes, and set it on vacation mode. This product gives me the confidence to leave my house keys at home for good. Highly recommend upgrading you regular deadbolts to electronic locks.