What does the term "local" refer to in a local alarm system?

In the context of alarm systems, "local" refers to a system that operates independently without the requirement to notify external monitoring services or authorities automatically. Specifically, a local alarm system typically activates alarms such as sirens or bells when a security breach is detected, but it does not communicate this alert directly to local law enforcement or emergency services.

This means that the alarm is intended mainly for immediate response by individuals in the vicinity, rather than a broader notification system that might involve professional monitoring. The design is focused on alerting anyone nearby to respond to the situation rather than relying on external authorities.

Other options describe functionalities that go beyond the local scope. Some systems connect to monitoring stations or provide direct notifications to emergency services, which indicates a level of external communication that is not part of what "local" signifies. Additionally, the designation of "local" does not imply any restrictions on the technology type used, such as wireless communication. Therefore, the explanation of a local alarm system aligns perfectly with the definition presented in the correct choice.