The Yale Conexis L1 Multipoint Smart Lock door lock puts you in full control, giving you the freedom to secure your home without the need of a key. Engineered for an easy installation, the door lock does not need any keys and is compatible to use with your smartphone and Yale Smart Home system which can be bought separately. It is powered by just four AA batteries and give you a warning once they are running low but in the case of an emergency, it has a 9v battery connection port which can act as a battery backup. Features and Benefits Security - Built-in tamper alarm, PAS24 accredited and approved by the Police Secured by Designed scheme. Smartphone Compatibility - Configure, control and unlock your Smart Door Lock from your smartphone via the secure Bluetooth App. Keyless - Say goodbye to keys and open your Smart Door lock via your smartphone, Key Card or Key Tag. Specifications Secure Push & Turn Thumbturn Compatible with the Yale Smart Home system  Requires 4 x AA batteries Colo