Such delayed egress devices, in a diversity of configurations, let building occupants somewhat easily leave the facility under any number of situations including emergencies. The equipment fits well where the exit door may be near public areas or where shoplifters could leave without visibly bypassing a cashier or security officer.
The basic element of such devices is a panic bar, the less flexible piece of equipment which could also locally and/or remotely alarm when a person pushes the bar to exit a seemingly locked door.