| 摘要 |
PROBLEM TO BE SOLVED: To provide a net for preventing invasion and robbery, with which sounding of an alarm or reporting to a security company can be performed by immediately detecting that an outsider invades a store, construction site or construction material pool or cuts the net to try to steal articles, materials or luggage from such a place. SOLUTION: Conductive through wires 2 are respectively integrated into non-conductive strand wires 1a in any one of longitudinal and lateral directions of a net 1 constituted by weaving the strand wires 1a and weak currents are made flow to these through wires 2.
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