Kaadas KS01 deadbolt lock provides easy key-free access to your home using an illuminated, highly responsive keypad. An optional mechanical key override lock is available as an extra backup. It features a convenient one-touch locking system for quickly and securely locking and auto locking function after a set time (10-99s adjustable) for peace of mind just in case you forget. Check more Kaadas locks here: https://kaadasgroup.com/ | Kaadas Smart Door Lock