Which of the following statements about central stations is true?

Central stations serve a crucial role in fire alarm systems by providing both alarm monitoring and supervisory services. This means they not only monitor incoming signals from various alarm systems to detect fire or other emergencies but also ensure that the systems themselves are functioning properly. This includes tasks like regular tests and inspections to verify that the equipment is operational, thereby enhancing safety and reliability.

By providing these services, central stations can promptly alert local fire departments or emergency services when an alarm is triggered, facilitating a rapid response to potential emergencies. This comprehensive support is a key aspect of their function, making them integral to an effective fire protection strategy.

Although the other statements hold some truth, they do not fully capture the primary responsibilities and functionalities of central stations. For example, while it is true that central stations may not be located on the protected premises, this aspect alone does not convey their operational significance. Similarly, central stations do not operate solely during emergencies; they are continuously monitoring systems irrespective of the occurrence of an alarm. Lastly, although a central station can be located anywhere in the city, this fact does not define its purpose, which is best summarized by their role in providing alarm and supervisory services.