Which component is primarily responsible for alerting individuals in an intrusion system?

The component primarily responsible for alerting individuals in an intrusion detection system is the notification device. This is because notification devices are designed specifically to communicate alerts to individuals when an intrusion or security breach is detected. They can take various forms, such as audible alarms, visual alerts (like flashing lights), or even automated messages sent to a user’s phone or monitoring center.

While other components, such as sensors, play a vital role in detecting unauthorized access or suspicious activities by monitoring environmental conditions or specific areas for abnormalities, they do not have the capability to alert individuals on their own. The control panel is responsible for receiving inputs from the sensors and managing the system but does not directly communicate alerts to individuals. The cable system serves as the wiring infrastructure connecting these components but does not provide any alert function by itself. Thus, the notification device is the critical element that fulfills the role of ensuring individuals are aware of potential threats as soon as they are identified.