Keyless entry simplified - Add up to 4 access codes (4 to 8 digits long) for experiencing keyless convenience No keyway makes this lock bump proof and pick proof Low battery alarm starts 6 weeks before they drain 9V terminal behind the silicone Kwikset logo acts as a backup if the battery wasn’t replaced 60 second lock out after 3 consecutive incorrect entries Meets Grade 3 security requirements Textured black ABS interior cover