RBTec
IRONCLAD
The IRONCLAD is an armored passive vibration cable fully wrapped by steel mesh. It is specifically designed for outdoor installation such as chain link fence, welded mesh fence and razor coil or concertina coil. The IRONCLAD comes in a ready for installation kits, no training or special tools needed. The sensor cable can be adjusted to the required length of detection zone: it comes in spools of 250ft (75m), 500ft (150m) and 1000ft (300m).
https://www.rbtec.com/Perimeter-Fence-Alarm-System