Emtek Keyless Electronic Deadbolt Lock - keyless security has never looked better than Emtek's keypad deadbolt. Leave your keys behind with freedom and security that Emtek's keypad deadbolt provides. This lock is perfect if you like to go for runs, walks, have children, frequent guests or if you own a rental home. To use this electronic lock, simply push the Emtek button and turn the thumb knob. In order to unlock the deadbolt you must enter a 4 digit code. These codes can be both created and deleted with ease. Need a temporary code for the cable guy? No problem, simply create a new code for the day and then delete. Each lock will hold up to 20 different codes, allowing you to have different codes for different occasions or guests. In addition to the locking functions, the E1000 has a protective coating to prevent wear patterns and the keys illuminate after dark making code entry a breeze after the sun goes down This heavy duty electronic deadbolt will fit any door between 1 3/8 inch and 2 1/4 inch thickness with a standard 2 1/8 inch bore measurement. This lock is known for its easy installation and user friendliness. Emtek electronic locks come with two unique user codes, allowing owners to use the lock right out of the box.