What requirement must dual-technology sensors fulfill to trigger an alarm?

For dual-technology sensors to trigger an alarm, they must detect both airborne acoustic signals and mechanical vibrations. This requirement takes advantage of the strengths of both technologies to provide enhanced security. By requiring dual detections, the sensor significantly reduces the likelihood of false alarms, as it needs to detect two distinct types of signals before signaling an alert.

Airborne acoustic detection focuses on sounds in the environment, which might include noise generated by an intruder. Meanwhile, mechanical vibration detection picks up physical movements or disturbances that occur when someone attempts to breach a structure. By combining these two methods, dual-technology sensors create a more reliable alarm system capable of distinguishing between genuine threats and benign disturbances.

This comprehensive approach ensures higher accuracy in the sensor's operation, enhancing overall security measures in an environment where protection is critical.