The Yale Security R-YRL216-NR-619 Yale Assure Keypad Lever Lock replaces existing levers or knobs, featuring a backlit keypad for keyless entry and the ability to set and remove unique entry codes. This Grade 2 certified lock, from a company trusted in home security since 1840, is suited for side entry, garage, basement, and home office doors. It can be upgraded with a Yale Network Module or Connected by August Kit for integration into home automation and security systems.