Security sensor

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Description

Any type of electronic sensor used to notify security or emergency personnel of a problem. Security sensors are available in a variety of types:

- Video sensors use cameras, tapes and people to monitor activity.

- Motion sensors have an infrared heat detector to examine temperature variations.

- Audio sensors have an ultrasonic detector to perceive noises such as breaking glass.

- Shock sensors detect physical vibrations.

- Contact sensors send an alarm when physical or optical contact is broken.

- Duress alarms are operated by humans when help is required.

See also fire, and smoke detectors.

Synonyms and Related Terms

Alarmmelder (Deut.); détecteur d'alarme (Fr.)

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