Features: Schlage Keypad Locks are ready to use right out of the box. Residential (light office) lockset with 19 user code capacity. Keypad illuminates when touched. Perfect for door leading to basement stairs, home office,utility closet, workshop, etc... Covers existing 2 1/8" door holes. Latchbolt with deadlocking plunger for added security. Emergency key backups. Grade 2 ANSI/BHMA certified. Fits left and right swinging doors. Fits doors 1 3/8" to 1 3/4" thick. Installs in 30 minutes with only one tool needed - screwdriver. 9 Volt Battery Operated - battery included with 3 year average life. Low battery indicator alerts you to change the battery. All metal chassis and escutcheons. Silicone rubber, wear resistant buttons. Pre set with random 6 digit code used for programming the user codes. Easy programming, you can do it right at the keypad; preset with two unique user codes. Comes with two random 4 digit user codes. Emergency exit feature - panic free exiting. Allows you to add, change or delete user codes in seconds. Fits most standard door preparations ; no additional mounting holes required. Can be installed with just a screwdriver in less than 30 minutes. Illuminated, wear-resistant keypad provides easy visibility even at night. Two keys included for use as needed (Cylinder: 5 pin solid brass, C keyway). One year manufacturer warranty.