Tough-as-nails, entry/egress lockset from the leader in top of the line security solutions, Kaba Ilco. Kaba has been making high quality security products for over 100 years. The EE1000 series is perfect for situations where you need two-way door security, such as in a police holding room, or airport jetway. This combination lock is an ANSI rated Grade 1, double sided, push-button security lock that is highly weather resistant. Entry is gained via a 1 to 5 digit code that is sequential. Vandal resitant, the Simplex® series of keyless locks have found widespread acceptance in high-traffic commercial, institutional, and government buildings.