Keyless entry for enhanced security, no keys to lose or forget. Flex-Lock feature allows you to switch between unlocked or automatic re-locking with the turn of a button. Keypad illuminates so you can see it at night. Codes easily added or deleted right at the keypad using the lock's unique 6 digit programming code. Includes 9V battery and 6 digit programming code; 2 - 4 digit user codes preset at the factory. Dimensions for the Elan keypad lever are 3 In. D x 6.5 In. W. x 4.9 In. H. exterior; 3 In. D. 5.8 In. W x 4.9 In. H. interior. In accordance with California Prop 65 WARNING: Cancer and Reproductive Harm-www.P65warnings.ca.gov ADVERTENCIA: Cancer y Dano Reproductivo-www.P65warnings.ca.gov AVERTISSEMENT: Cancer et Troubles d l'appareil reproducteur-www.P65warnings.ca.gov - Lead