SINOPSIS DEL LIBRO

<p>This book discusses the basic components of any alarm system. <br><br>All alarm systems have two basic functions. First, they monitor their environment looking for a change such as a door or window opening or someone moving about in the room. Second, they alert the legal owner or user to this change. The system described in this book uses a scanning type software to detect intruders. It behaves like a guard dog, pacing up and down the fence li...Seguir leyendo