What is the primary function of alarm systems in security?

The primary function of alarm systems in security is to detect unauthorized intrusion and alert personnel. This ensures that any unauthorized access to a property or premises is identified quickly, enabling a prompt response to potential threats. Alarm systems are designed to detect specific disturbances, such as the opening of doors, breaking of windows, or movement within a designated area. Upon detection of these activities, the alarm system generates alerts, which can notify security personnel or law enforcement, thus playing a crucial role in safeguarding property and ensuring the safety of individuals within the premises.

The other functions listed, such as monitoring employee performance or communicating with management, do not pertain to the main purpose of alarm systems. Similarly, while tracking inventory levels is important in security contexts, it is not a fundamental role of alarm systems. The design and technology of alarm systems focus specifically on detection and alerting, which is why this choice accurately captures their primary function.