The electromagnetic lock can be monitored for a closed and secure condition by a 'holding force'sensor, which is offered by several manufactures. Typically it has wires through the door to the hinge side. When energized, the outside knob is restricted from turning while the inside of the lock allows free egress. Due to the nature of its construction and operation this lock is always fail-safe. This type of lock offers positive latching for fire tower applications.
Loss prevention is a primary concern for all cultural institutions.
By evaluating a location to determine the level of security needed, one can choose a locking system that best conforms to the needs of the site. With many different locking devices available to the consumer, convenience is no longer compromised by high security. Choices range from proprietary keys and cores, to electronic locking devices, to card-based access control systems with the ability to audit and create time zones. Whatever the level of security control required, cultural institutions are now able to provide maximum loss protection, along with a high level of user-friendly operation. Bryan J. Perun is majoring in Administration of Justice at the University of Pittsburgh and is interning for SecuraComm.