This system is circumference intrusion alarm equipment which uses a special cable as the detector. According to the differences of operating principles and uses, it can be divided into two systems: The vibration cable intrusion detection and the leakage cable intrusion detection.

The detection cable can be laid on circumference of any shape and also can be buried under ground to form a guard area, and thus it is characterized by good concealment, destroy-proof, unaffected by topography and environment, being able to work all the time.

It is applied to guard protection around such places as residential quarters, airport, power station, warehouse, combustible or explosive substance warehouse, prison, important military objectives, etc.