What does a combination detector use to detect intruders?

A combination detector utilizes two different technologies to enhance its ability to detect intruders. By integrating multiple detection methods, such as infrared sensing and microwave sensing, these devices can mitigate false alarms and increase detection accuracy. This dual approach allows the detector to be more reliable because it requires the confirmation from both technologies before triggering an alert, which is particularly beneficial in environments that may be subjected to varying conditions or potential interference. This blend of detection methods gives greater assurance in accurately identifying true intrusions compared to using a single type of detection technology.