Advance notice of intrusion that activates the alarm upon violation, causing the intruder to retreat. The presence of an electric fence deters intrusion. You are able to detect where and when an intrusion has taken place from the main control panel with our multi-zone systems. Violation / intrusion of the perimeter fence can automatically turn on floodlights. In case of power failure, there is a back-up battery that runs the system for up-to 14 hours (more if required).