Replace 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 lock is Grade 2 certified and backed Yale, one of the world's best known brands in the lock industry that's been securing homes since 1840, ensuring that your home and family is always safe.