Replaces Your Existing Lever Or Knob with the Assure Lever, a keypad lever lock, and enjoy the convenience of unlocking and locking your door using the backlit keypad, you'll never have to carry around your keys again. Create unique entry codes for friends and family and remove codes whenever you need to. Great for side entry doors, garage entry, basement doors, home offices - any door with a single hole prep. The Assure Lever can be upgraded with a Yale Network Module or Connected by August Kit to integrate into most home automation and security systems so that you can control and monitor the lock from anywhere.