Panic button
Encyclopedia
A panic alarm is an electronic device designed to assist in alerting somebody in emergency situations where a threat to persons or property exists.

A panic alarm is frequently but not always controlled by a concealed panic alarm button. These buttons can be connected to a monitoring center or locally via a silent alarm or an audible bell/siren. The alarm can be used to request emergency assistance from local security
Security
Security is the degree of protection against danger, damage, loss, and crime. Security as a form of protection are structures and processes that provide or improve security as a condition. The Institute for Security and Open Methodologies in the OSSTMM 3 defines security as "a form of protection...

, police
Police
The police is a personification of the state designated to put in practice the enforced law, protect property and reduce civil disorder in civilian matters. Their powers include the legitimized use of force...

 or emergency services. Some systems can also activate closed-circuit television
Closed-circuit television
Closed-circuit television is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors....

 to record or assess the event.

Many panic alarm buttons lock on when pressed, and require a key to reset them.

Alarm

Examples of alarm panic buttons are:
  • A button in a critical system (such as a nuclear weapon
    Nuclear weapon
    A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion. Both reactions release vast quantities of energy from relatively small amounts of matter. The first fission bomb test released the same amount...

    s system) used to quickly activate an extreme measure to mitigate an emergency situation.
  • A red button integral to key fobs which activates a car alarm.
  • A device given to elderly individuals in order to maintain their independence outside of an Aged Care Facility, while still affording them a means of summoning help should they require it (ie a medical emergency that renders them immobile, like a fall, injury or illness). Such a device can also be referred to as an Emergency Medical Alert (EMA) button and can be fitted as either a pendant or bracelet to be worn by the user. MAB's are usually wirelessly connected to a call centre. When the alarm is raised, an operator will call the individual's home to ensure a false alarm has not occurred; if there is no answer, the operator will alert either family members, emergency services, or both.
  • A button similar to the above, which is used indoors in self-sufficient houses for elderly people, where it alerts someone inside the house, who will then first check for a false alarm by phoning the person, and if there is no false alarm, will enter the person's flat to check what is the problem.
  • A button used in convenience stores, gas station, or other establishments staffed with a single employee during late hours. Often located under the counter near the cash register or safe, the button can be pressed in times of distress (Such as robbery, disruptive or threatening behavior, or a situation which may warrant assistance), triggering a silent alarm. If the button alarms a private security company, a fee may be charged for each time the button is used. This prevents mis-use, and often aids in the employees judgment of the situation; whether or not it warrants the fee to have help to deal with the situation.
  • A boss key
    Boss key
    A boss key or boss button is a special keyboard shortcut used in computer games or other programs to quickly hide the program and possibly display a special screen that appears to be a normal productivity program...

    -like prompt in pornographic or grotesquely violent videogames that brings up an innocent (looking) game, for use when parents or significant others happen to be walking by or knocking..
  • In pop culture, humorous variants of such a panic button also exist, such as a wearable button bearing only the word "PANIC" or an adhesive key, meant to look like a key for a computer keyboard, usually red, and also bearing only the word "PANIC".

Medical alert

A medical alert panic button or medical alarm
Medical alarm
A medical alarm is an alarm system designed to signal the presence of a hazard requiring urgent attention and to summon emergency medical personnel. Other terms for a medical alarm are Personal Emergency Response System or medical alert....

 is an electronic device worn on a bracelet
Bracelet
A bracelet is an article of jewelry which is worn around the wrist. Bracelets can be manufactured from metal, leather, cloth, plastic or other materials and sometimes contain jewels, rocks, wood, and/or shells...

 or necklace
Necklace
A necklace is an article of jewellery which is worn around the neck. Necklaces are frequently formed from a metal jewellery chain. Others are woven or manufactured from cloth using string or twine....

 as part of a medical alert system. When pressed, it sends a wireless signal to a home console which dials alarm monitoring staff and alerts them of an emergency condition. Depending on the severity of the situation, alarm monitoring staff will summon friends, family, or emergency services. A panic button alarm is a self contained electronic device powered by an internal long-life battery, typically waterproof and designed to be shock resistant and highly durable.

Holdup alarms

Holdup alarms are alarms that require a person under duress to covertly trigger the alarm to summon the proper authorities. These types of alarms are most commonly found in retail establishments and financial institutions, but are sometimes an integrated feature of home burglar alarm
Burglar alarm
Burglar , alarms are systems designed to detect unauthorized entry into a building or area. They consist of an array of sensors, a control panel and alerting system, and interconnections...

s. The trigger could be a push button, electronic money clip, a foot rail, or a number of other things. Either the person under duress or a witness can activate this kind of alarm. For example if someone is ambushed outside of their home and told to disable their alarm system they can possibly enter a special duress code
Duress code
A duress code is a covert signal used by an individual that is under duress to indicate their state. The term duress code typically refers to a signal embedded in normal communication, such as a word or phrase used during conversation to alert other personnel of the duress...

 that is different from their normal deactivation code to notify authorities without arousing suspicion. These alarms are almost always silent and usually require a manual reset with a key or a special code.

Monitoring services

The monitoring service (central station
Central Station (Alarm Monitoring Center)
Central-Station is a common term used to refer to a company that provides services to monitor burglar, fire and residential alarm systems. The central-station may also provide watchman and supervisory services....

) is a call center facility that is staffed at all times to receive calls from the system console. Monitoring service centers that are approved by Underwriters Laboratories
Underwriters Laboratories
Underwriters Laboratories Inc. is an independent product safety certification organization. Established in 1894, the company has its headquarters in Northbrook, Illinois. UL develops standards and test procedures for products, materials, components, assemblies, tools and equipment, chiefly dealing...

 (UL) have internal backup systems to add redundancy
Redundancy (engineering)
In engineering, redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe....

. Some monitoring services employ trained operators enabling them to better
evaluate the severity of help requests. In most less developed countries however, response to panic alarms are slow

MIDI

In a MIDI instrument when the note-off message for a played note is not received, the note will sound on endlessly, and also has the potential to raise in amplitude enough to damage the speakers or other components in the sound system. Hitting the panic button will send a note-off command to all keys, stopping any notes that were still playing.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK