Devices used in a commercial intrusion detection system may require which feature?

Dual technology is a feature that enhances the reliability and accuracy of intrusion detection systems. This approach typically combines two different types of detection methods, such as passive infrared and microwave sensors. By using both technologies, the system can reduce false alarms and improve the chances of correctly detecting an intruder. For instance, an intruder may trigger the infrared sensor by body heat, while the microwave sensor can detect motion, thereby minimizing false positives generated by environmental changes or small animals.

During an intrusion event, having dual technology allows the system to cross-reference the inputs from both sensors, thus providing a more comprehensive assessment of whether an intrusion is occurring. This feature is particularly valuable in commercial environments, where security needs to be stringent and reliable while managing the possibility of false alarms that could disrupt business operations.