The SmartCode 270 Touchpad Electronic Deadbolt combines touchpad tactile feedback with bright LED illumination for easy code access. SmartCode is easy to install, program and use and utilizes 4 AA batteries. It also features SmartKey re-key technology as the back-up keyway. The deadbolt is operated by electronic touchpad and key outside and turn-piece inside. Activate the auto-locking feature and choose between 30-second, 1-minute, 3-minute, 5-minute or 10-minute time delay. Up to 50 customizable user codes and ten 1-time user codes with 4 to 8 digit code length for family, guests and service professionals. Three incorrect code attempts trigger an audible alarm and 60-second lockout for increased security.