Description: High quality craftsmanship with the peace of mind that Brinks door hardware is protecting your home. A trusted name in security since 1859, Brinks digital deadbolt offers the convenience of touch button, keyless entry. It has an optional auto-locking function that relocks the door after opening, an illuminated keypad for easy viewing in the dark, accommodates up to 6 user codes. It has 10 buttons for increased security and a lock button. Keyed for emergency mannual override. Lock It has a 1 inch deadbolt and a steel anti-saw pin. It fits all doors 1-3/8" to 1-3/4" thick and has a 4-way adjustable latch that fits 2-3/8" or 2-3/4" backsets. Deadbolts provide additional security to your exterior knob, lever or handleset and are best for front, back and side doors.