The 83307 Top Battery Holder is designed for use with the 909, 910, 911, and 912 series smartcode deadbolts and levers (Kwikset keyway). The kit includes a white top coded wireless door release and a battery holder that will last up to 3-4 years depending upon usage.Make sure your deadbolt is working properly and that the batteries are still fresh with this 909/911 top battery holder from Kwikset.Kwikset 83307 Battery Holder for 909, 910, 911 , and 912 Series SmartCode Deadbolts and LeversNo need to back out of the door and go down the steps.