FIELD: security guarding equipment, in particular, for protection of borders of monitored spaces together with artificial obstacles. SUBSTANCE: device has high-frequency receiver and transmitter which are distributed in space. Goal of invention is achieved by additional functions performed by surface radio line, including sensitive guarding detector, low-frequency synchronization line and transmitter power supply. EFFECT: possibility to monitor deformation of metal wire fences under impact of intruder and to detect direction of movement of intruder through fence. 4 cl, 15 dwg
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