Which detection system has a delay of 30 to 60 seconds between activation and notification?

The correct detection system that features a delay of 30 to 60 seconds between activation and notification is a verification system. This system is designed to minimize false alarms by requiring a verification process after initial detection of smoke or elevated heat levels. When the detection system is triggered, it typically does not immediately notify the people on-site or dispatch emergency services. Rather, it allows for a brief period during which the conditions that caused the activation can be assessed to confirm whether there is indeed a fire present or if it is a false alarm. This delay is crucial as it helps to prevent unnecessary evacuations and alerts, which can disrupt operations and cause panic.

Verification is often used in environments where sensitive operations are managed, and safety is a critical concern, allowing for more thoughtful responses to potential threats. Other types of systems, such as photoelectric or ionization detectors, respond more quickly to stimuli without incorporating a delay for verification purposes.