What is the practice of suppressing an alarm signal until multiple detectors register an alarm condition called?

What is the practice of suppressing an alarm signal until multiple detectors register an alarm condition called?

• A. Cross activation
• B. Cross layering
• C. Cross zoning
• D. Signal suppression

Answer: (C)

The practice of suppressing an alarm signal until multiple detectors register an alarm condition is known as cross zoning. This approach helps to reduce false alarms by requiring the activation of more than one sensor in different zones before an alarm is triggered. By implementing cross zoning, security systems can avoid responding to non-threat conditions, such as environmental factors or individual sensor errors, thus enhancing overall security effectiveness. This method ensures that an alarm condition is validated through multiple detectors, providing a more reliable indication of an actual intrusion. The concept relies on spatial reasoning—monitoring distinct areas where sensors are installed, which allows for better discrimination between actual threats and benign disturbances. In contrast, other options like signal suppression and cross activation do not primarily focus on the dual validation aspect that cross zoning encapsulates.

The practice of suppressing an alarm signal until multiple detectors register an alarm condition is known as cross zoning. This approach helps to reduce false alarms by requiring the activation of more than one sensor in different zones before an alarm is triggered. By implementing cross zoning, security systems can avoid responding to non-threat conditions, such as environmental factors or individual sensor errors, thus enhancing overall security effectiveness. This method ensures that an alarm condition is validated through multiple detectors, providing a more reliable indication of an actual intrusion.

The concept relies on spatial reasoning—monitoring distinct areas where sensors are installed, which allows for better discrimination between actual threats and benign disturbances. In contrast, other options like signal suppression and cross activation do not primarily focus on the dual validation aspect that cross zoning encapsulates.