Security fence with two or more rolls of barbed wire

摘要

An alarm wire runs along the wire of at least one barbed-wire roll (1,2,4). A second alarm wire is laid in the ground (3) below at least one barbed wire roll (2), and held by anchors (6) connected to the adjacent barbed wire roll (2). A third alarm wire is put up in side the upper barbed wire roll (4). Three rolls of barbed wire may be arranged in a pyramid shape.