CAT CAT Burglar Alarm Components & Detection 1

Question 1

A passive infrared (PIR) motion detector works by sensing:

Accepted Answer

Changes in infrared energy emitted by warm moving bodies

Answer

PIR detectors sense changes in infrared radiation emitted by warm bodies moving through the detection zone, triggering an alarm when a significant change is detected.

Question 2

What type of sensor uses a magnet and a reed switch mounted on a door or window frame?

Accepted Answer

Magnetic contact sensor

Answer

Magnetic contact sensors consist of a magnet on the movable door/window and a reed switch on the fixed frame; when the gap widens, the circuit opens and triggers an alarm.

Question 3

Up to what distance are glass break acoustic detectors typically rated to detect glass breakage?

Accepted Answer

25 feet

Answer

Glass break detectors are typically rated to detect glass breaking up to 25 feet away, though exact range depends on manufacturer specifications and room acoustics.

Question 4

What are the TWO primary purposes of entry and exit delay settings in a burglar alarm system?

Accepted Answer

Allow authorized users time to enter/exit without triggering an alarm and reduce false alarms

Answer

Entry/exit delays allow authorized users to arm/disarm the system within a preset time window and simultaneously reduce false alarms caused by accidental triggers.

Question 5

A dual-technology motion detector reduces false alarms by combining which two sensing technologies?

Accepted Answer

PIR and microwave

Answer

Dual-technology detectors combine PIR and microwave sensing, requiring both technologies to detect motion simultaneously before triggering an alarm, greatly reducing false alarms.

(CAT) Certified Alarm Technician Level I Practice Test

(CAT) Certified Alarm Technician Level I Practice Test

CAT CAT Burglar Alarm Components & Detection 1