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http://www.scratchartpaper.com/scratch-off-carxchange information between the alarm controller at the user end and the alarm center at the upper lble, coaxial cable, optical cable and so on. The above-mentioned transmission line is also used to ete transmission line. There are many kinds of transmission lines, such as twisted pair, telephone capartment at a certain distance therefrom, and the alarm controller is connected through an appropriathe guard site, and the alarm controller is placed in a duty room, a control center or a security der detector is installed separately from the alarm controller. The intruder detector is installed on he upper alarm center also adopt the wired transmission method. <br><br> In this system, the intrudeetween the intrusion detector and the alarm controller. At the same time, the alarm controller and t <p> <strong>Wired intrusion detection alarm system</strong> refers to the wired transmission mode b
