Intrusion Detection

Intrusion Detections Systems (IDS), are sited within a building and offer out of hours protection when the building or buildings are locked at night.

CPNI assured IDS will always consist of at least two separate components:

• IDS control and indicating equipment (CIE) - the “brains” which will audit and control the system
• Detectors – individual mounted detectors which will sense an intrusion

A complete IDS will take the overall grading of the lowest component, for example;

ENHANCED CIE, 3 ENHANCED detectors, 2 BASE detectors = BASE overall

For in-depth guidance to IDS, see:  Intrusions Detection Systems Guidance for Security Managers

For the purpose of assessing and assuring, CPNI have split IDS into different categories;

• protective switches: detects the opening of a door or window to which it is fitted; 
• vibration detectors : detects vibrations on the structure to which it is fitted:
• beam detectors : detects the presence of an intruder by the disruption of one or more infra-red or laser beams; 
• microwave sensors: detects the presence of a moving intruder by responding to the reflection of radio waves; 
• break glass detectors : detects glass windows being broken;
• Passive infra-red sensors: detects the presence of a moving intruder by responding to the infra red (heat) signature generated by the human body; 
• control and Indicating equipment (CIE)