The text outlines basic security concepts for protecting the perimeter and interiors of buildings and systems for use within working hours. It then explains space detectors; details requirements for intruder movement detection indoors; and discusses passive, infrared, ultrasonic Doppler, and microwave radar detection methods. Other topics addressed are movement detection outdoors using infrared beams, longer wavelengths, the microwave fence, vibration sensors, television monitors, alarms and the causes of false alarms, control of personnel and materials movements, espionage countermeasures, and vehicle security. Next, the benefits, disadvantages, and applications of specific devices mentioned in previous chapters are reviewed. Several types of sensors; signaling and control devices; power supplies; and equipment to control access, personnel, and materials are considered. Finally, the text deals with the installation, operations, and maintenance of electronic surveillance systems. Numerous case histories, diagrams, checklists, and an index are provided.