NCJ Number
11897
Journal
Security World Volume: 10 Issue: 10 Dated: (NOVEMBER 1973) Pages: 30-33,35
Date Published
1973
Length
5 pages
Annotation
PRINCIPLES, OPERATION, AND USES OF THE MAJOR TYPES OF CURRENTLY AVAILABLE DEVICES WHICH SENSE EITHER INTRUSION OR HAZARD.
Abstract
THE BRIEF DESCRIPTIONS INCLUDE THE FOLLOWING DEVICES PHOTOELECTRIC BEAM, MICROWAVE, ULTRASONIC, ACOUSTIC/ AUDIO, SONIC, CAPACITANCE DETECTOR, ELECTROMECHANICAL SYSTEMS, PRESSURE DETECTORS, COMPRESSION SENSORS, MAGNETIC SWITCHES, VIBRATION DETECTORS, INFRARED, AND LASER SYSTEMS. THE TERMINOLOGY DEFINITIONS ARE ACCOMPANIED BY QUESTIONS AND ANSWERS PERTAINING TO SECURITY DEVICES AND SYSTEMS.