What is the role of detectors in SHS control and release interfacing?

• A. It initiates release and ensures proper timing; some SHS rely on fixed detection or external detection
• B. It never initiates release
• C. It only logs events
• D. It uses water sensors

Answer: (A)

Detectors serve as the trigger and timing gate for SHS release interfacing. They sense a fire condition and feed a signal to the control equipment, which then initiates the release sequence and coordinates the timing to prevent false or premature discharge. The control logic may require signals from one or more detectors and apply interlocks or delays so that release happens only when the hazard is confirmed. Some SHS configurations use fixed detectors located in the protected areas or rely on an external detection network; in either case, the detector inputs are the primary cause of release, ensuring the system acts promptly when a fire is detected. Detectors are not merely logging events, and SHS release is not based on water sensors.