Intruder Detection Systems

Mr. Zwirn has been involved in the security survey, need analysis, system recommendations, sales, design, installation, programming, testing, inspection, service, maintenance, and monitoring of more than five (5,000) thousand security and life safety systems for residential, commercial, industrial and governmental applications. At last, a book about an important subject that the nontechnical among us can read and understand. Although those of us in the safety and security professions are fully aware of the importance of intrusion detection systems and fire alarms, rarely can we find a book on the subject that is both highly informative and yet very readable, or ‘user friendly'.