What security control panel feature requires two predetermined zones to trip before an alarm signal is transmitted?

What security control panel feature requires two predetermined zones to trip before an alarm signal is transmitted?

• A. Voice verification
• B. Cross zoning
• C. Acoustic glass break detector
• D. Stress sensor

Answer: (B)

Cross zoning is a security panel feature that requires two predetermined zones to be tripped before an alarm is transmitted. The system is set up so that an alarm only goes out if both specified zones are triggered within a short time window, typically representing a plausible intrusion path. This verification helps filter out false alarms caused by a single sensor issue, pets, or environmental disturbances, because a real break-in usually involves movement through more than one monitored area. For example, a door contact plus an interior motion sensor across the entryway might both need to trigger to generate an alarm. Other options don’t enforce this two-zone condition: voice verification relates to confirming identity by speaking a credential, not to how many zones must respond; an acoustic glass break detector is a single sensor that can alert on glass events on its own; a stress sensor measures pressure or weight and doesn’t govern cross-zone triggering.

Cross zoning is a security panel feature that requires two predetermined zones to be tripped before an alarm is transmitted. The system is set up so that an alarm only goes out if both specified zones are triggered within a short time window, typically representing a plausible intrusion path. This verification helps filter out false alarms caused by a single sensor issue, pets, or environmental disturbances, because a real break-in usually involves movement through more than one monitored area. For example, a door contact plus an interior motion sensor across the entryway might both need to trigger to generate an alarm. Other options don’t enforce this two-zone condition: voice verification relates to confirming identity by speaking a credential, not to how many zones must respond; an acoustic glass break detector is a single sensor that can alert on glass events on its own; a stress sensor measures pressure or weight and doesn’t govern cross-zone triggering.