Good if you are studying the subject at college,
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This review is from: Intruder Alarms (Paperback)
The book covers all the fundamentals and (but IMO) follows the syllabus of a course at tech college. From that point of view, if you want to learn about alarms, how they work, what sensors to use where, etc, it may not be for you. If you want to take the course, then buy it.