Yale Locks & Hardware
Key Free B1L and T1L
The Key Free B1L and T1L boast the quality cues of Yale’s current lock line, including fully gasketed installation, ANSI/ BHMA grade 2 certification, motorized tapered deadbolts, and intuitive phone layout keypads. For additional homeowner peace of mind, ample warning is provided before the locks’ batteries lose power, and if connected to a home control system the system may generate “low battery” email or text alerts. Should the batteries drain, terminals on the bottom exterior of the lock accept a nine-volt battery, which provides enough power to enter the code and gain access.
https://www.yale2you.com/Products/Keyless/US3KeyFreeTouchscreenDeadboltStandAlone.aspx