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  The Alarm, Sensor & Security Circuit Cookbook - Thomas Petruzzellis - Google Books

  http://books.google.de/books?id=RM2lEleKFAwC&pg=PA127

  This text is aimed at technicians, hobbyists, and students and provides complete circuit diagrams and building instructions for a wide range of creative sleuthing applications. The designs are fully tested and proven effective in real-world alarm, sensor,…

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  CROCE, Benedetto

  https://web.archive.org/web/20070625133010/http://www.bautz.de/bbkl/c/croce_b.shtml

  Keine Beschreibung vorhanden.

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  JASPERS, Karl

  https://web.archive.org/web/20070629100556/http://www.bautz.de/bbkl/j/Jaspers.shtml

  Keine Beschreibung vorhanden.

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