The Schlage NDEBB ATH 643E is a Grade 1 wireless cylindrical lock from the ENGAGE series, designed for robust security and convenience. This lock features a 2.4 GHz Bluetooth Low Energy reader, a 6-pin SFIC prep (less core), and mobile enablement for versatile access control. Finished in aged bronze with an ATH lever, it's field reversible for flexible installation in various door configurations.