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Physical Security > Alarms > Flashcards

Alarms Flashcards

1
Q

The button, magnetic switch, or thermostat that will cause system to alarm

A

Actuator

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2
Q

This is the monitor. Technically, it is the visual or audible signaling device that indicates conditions of the associated circuits.

A

Annunciator

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3
Q

The property of two or more objects which enables them to store electrical energy in an electrostatic field between them.

A

Capacitance

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4
Q

Records a change in capacitance or electrostatic fields to detect penetration through windows, ventilators, and other openings

A

Capacitance Proximity Sensor

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5
Q

Can be used to detect attempted penetration into safes or storage cabinets

A

Capacitance Proximity Sensor

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6
Q

Material which transmits electric current

A

Conductor

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7
Q

Examples of material which transmits electric current

A

Wire and cable

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8
Q

The terminal box for all sensors

A

Control Unit

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9
Q

A term applied to a system designed so that if a component fails to function properly, the system will, by a signal or otherwise, indicate its incapacity

A

Fail-Safe

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10
Q

Used to call for assistance

A

Duress sensor

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11
Q

What does a duress sensor consist of?

A

A hand or foot operated switch

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12
Q

Activation of sensors for which no cause can be determined

A

False Alarm

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13
Q

The combination of components to include sensors, control units, transmission lines and monitor units integrated to operate in a specified manner

A

Intrusion Detection System

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14
Q

Devices that initiate alarm signals by sensing the stimulus, change, or condition for which designed

A

Intrusion Detection Sensors

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15
Q

An electronic bell for outdoor or indoor use in the vicinity of a protected area

A

Local Audible Alarm

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16
Q

A radio/radar frequency (RF) transceiver which detects motion

A

Microwave sensor

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17
Q

A microwave sensor has a frequency range of GHz, which is what?

A

a billion cycles per second

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18
Q

A device that senses and reports on the condition of the system

A

Monitor

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19
Q

Detects movement inside the area to be protected

A

Motion Sensor

20
Q

Detects the sounds of forced entry throughout walls, ceilings, and doors

A

Passive Ultrasonic Sensor

21
Q

Detects entry through doors, windows, walls, or any other openings into the protected area

A

Penetration Sensor

22
Q

An interruption of a light beam transmitted to the receiver causes this to alarm:

A

Photoelectric System

23
Q

A photoelectric system consists of what 2 separate units?

A

1) a transmitter

2) a receiver

24
Q

The frequency range of sound that is above the capabilities of normal human hearing

A

Ultrasonic

25
Q

In intrusion detection systems, ultrasonic is used in what range?

A

Between 21,500 and 26000 Hz (cycles per second)

26
Q

Detects by frequency shift the motion of an intruder inside the protected area

A

Ultrasonic Motion Sensor

27
Q

Detects forced entry through metal barriers placed over windows and ventilators or attempts to drill, saw, or cut through walls, ceilings, floors or doors

A

Vibration Sensor

28
Q

What are the 3 purposes of intrusion detection alarm systems?

A

1) To economize on people
2) To substitute in place of other security measures
3) To supplement by providing additional controls

29
Q

What are the 5 basic principles of operation of intrusion detection systems?

A

1) Breaking of an electrical circuit
2) Interrupting a light beam
3) Detecting sound
4) Detecting vibration
5) Detecting a change in capacitance due to penetration of an electrostatic field

30
Q

What are the 4 types of electro-mechanical alarm systems?

A

1) Metallic foil
2) Magnetic switches
3) Wire service detection
4) Pressure mats, ribbons, or wafers

31
Q

What are the 6 types of Volumetric alarm systems?

A

1) Capacitance
2) Vibration
3) Microwave
4) Ultrasonic
5) Passive Infrared
6) Photo Electric

32
Q

Type of alarm system: The protective circuits activate a visual or audible signal in the immediate vicinity of the object of protection

A

Local alarm system

33
Q

Type of alarm system: This system is one in which the installation-owned system is a direct extension of the police and/or fire alarm systems.

A

Auxiliary system

34
Q

What is the least effective alarm detection system?

A

Auxiliary

35
Q

Type of alarm system: In this system, alarms are transmitted to a central station outside the installation from which appropriate action is taken to notifying local police or fire departments

A

Central station system

36
Q

Type of alarm system: It is similar to the central station system except is owned by, and located on, the installation.

A

Proprietary system

37
Q

Which alarm detection system responds to alarms with the installation’s own security or firefighting personnel?

A

Proprietary system

38
Q

What are the 3 basic parts of an alarm system?

A

1) Sensor
2) Circuit
3) Annunciator

39
Q

What does the sensor do?

A

It’s the triggering device

40
Q

What does the circuit do?

A

Carries the message to the signaling apparatus

41
Q

What does the annunciator do?

A

It is the signaling system or device

42
Q

What are the 4 functions an alarm system could have?

A

1) Detection of fire
2) Detection of intrusion
3) Emergency notification
4) Monitoring of equipment or facility conditions

43
Q

What estimated percentage of all alarms are false?

A

90-98%

44
Q

What are the 3 most common causes of false alarms?

A

1) User negligence
2) Poor installation or servicing
3) Faulty equipment

45
Q

CCTV consists of what 4 elements?

A

1) Television cameras
2) Monitor
3) Connecting circuits
4) Power source

Physical Security (10 decks)

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