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Inhaltsangabe
The package contains everything you need to build a computerized talking door alarm. -22-page book filled with fascinating facts about security systems -2 key cards with stickers -Circuit board with components you connect yourself-just twist wires -Case Burglars beware! The alarm voice declares "Keep Out!" before the siren sounds. Swipe the special key to turn your alarm on. Swipe the key again to turn it off!
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Keep Out! Door Alarm: Build Your Own Key-Card Security System!
Anbieter: BooksRun, Philadelphia, PA, USA
Verkäuferbewertung 5 von 5 Sternen
Paperback. Zustand: Very Good. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting. Artikel-Nr. 0439668352-8-1
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