Linear Electronic Access Control Cylindrical Lockset, Left-Hand Opening: * Durable construction designed to last more than 10 years * Clutch lever design * Long battery life (15,000 keypad activation) with low battery alert * Batteries not included * Passwords are stored during battery removal * Easy-to-install into a standard cylindrical door prep (ANSI 151.8) * 15-minute installation * All mounting hardware included * Master password control system * 120 user codes * Invalid code lockout for 20 seconds after 3 incorrect password attempts * Override key emergency situations (2 keys included) * Left-hand opening * 2-year limited warranty * Dimensions: 7.3"W x 8.4"D x 10.2"H