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Crash bar. Crash bar doors in a school, with upper vertical rod latches. A crash bar (also known as a panic exit device, panic bar, or bump bar) [ 1][ 2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used ...
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Electronic lock. An electronic lock (or electric lock) is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. Electric locks may be connected to an access control system, the advantages of which include: key control, where keys ...
Panic doors, panic hardware Fire safety appliance permitting locked doors (typically self-closing) to be opened from the inside when pressed with sufficient force, thus permitting a person to open the door without having to turn a knob or lever. PASS device, personal alert safety system An alarm device that signals that a firefighter is in trouble.
Public anxiety over shoplifting is an enduring phenomenon and is often a stand-in for larger concerns of cultural, economic or political changes
Mortise lock. The two main parts of a mortise lock. Left: the lock body, installed in the thickness of a door. This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket ...
Dysregulation. Valence. Emotions. v. t. e. Panic is a sudden sensation of fear, which is so strong as to dominate or prevent reason and logical thinking, replacing it with overwhelming feelings of anxiety, uncertainty and frantic agitation consistent with a fight-or-flight reaction. Panic may occur singularly in individuals or manifest suddenly ...
CRM 114 (fictional device) The CRM 114 Discriminator is a fictional piece of radio equipment in Stanley Kubrick 's film Dr. Strangelove (1964), the destruction of which prevents the crew of a B-52 from receiving the recall code that would stop them from dropping their hydrogen bombs on the Soviet Union.
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