Difference between revisions of "Security sensor"
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- Duress alarms are operated by humans when help is required. | - Duress alarms are operated by humans when help is required. | ||
| − | See also [ | + | See also [[fire%20detector|fire]], and [[smoke%20detector|smoke]] detectors. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 12:03, 10 May 2016
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.)