What is the primary purpose of dual technology motion detectors?

The primary purpose of dual technology motion detectors is to reduce false alarms. These devices combine two different methods of detection, typically passive infrared (PIR) and microwave detection, to confirm motion before triggering an alarm. By requiring both technologies to identify movement simultaneously, the system minimizes the likelihood of false alarms caused by environmental factors such as pets, moving shadows, or changes in temperature.

The integration of dual technologies means that a sensor is less likely to react to non-threatening stimuli, ensuring that only genuine threats trigger an alarm. Thus, they effectively enhance the overall reliability of security systems, creating a more trustworthy environment for users while avoiding unnecessary disruptions and response actions from security personnel.