Security sensor

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 detector fire, and detector smoke detectors.

Synonyms and Related Terms

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