This beautiful keypad entry with flex-lock feature may look straightforward, but it has some great tricks. The flex-lock feature allows homeowners to choose whether their door remains locked (with a code required for entry) or unlocked (no code required for entry). It installs in minutes with just a screwdriver and the illuminated keypad has a wear-resistant coating to prevent wear patterns. A 9-volt battery, with a 3 year average battery life, is included. Additional features include 10,000 possible user codes making it almost impossible for anyone to guess valid code; easily programmed right at the keypad; no need to remove inside escutcheon; reversible levers for left or right-handed doors; and a satin nickel finish.