Keypad entrance deadbolt with vandalism resistant free-spinning Turn-Lock feature. Convenient keyless access. Illuminated keypad with wear-resistant coating prevents wear patterns. 9 V battery included (average life of 3 years). 10,000 possible codes. Easily programmable. Made of zinc and nickel. Satin nickel finish. Lifetime warranty on mechanism components and finish. 1-year warranty on electronic device.