What is a "lockdown" feature used for in access control?

The "lockdown" feature in access control systems is primarily designed to quickly secure all doors during a threat, enhancing safety and security in critical situations. This feature allows for a rapid response to emergencies, such as an active shooter or other immediate threats, by ensuring that all access points are locked and secured without delay.

This capability helps to protect occupants by restricting access to and from the building, effectively isolating potential threats. The automatic lockdown can be triggered by an alarm signal or manually by security personnel, making it an essential tool for maintaining safety in various environments, such as schools, corporate offices, and other facilities.

While some other options like scheduled maintenance, software updates, and managing user access levels are important aspects of access control systems, they do not pertain to the immediate action of securing facilities in response to threats.