What is a key advantage of dual technology motion detectors?

A key advantage of dual technology motion detectors is their ability to minimize false alarms. These detectors combine two different sensing technologies, typically passive infrared (PIR) and microwave, to improve the accuracy of detection. By requiring confirmation from both technologies before triggering an alarm, dual technology systems significantly reduce the likelihood of false alarms caused by environmental factors such as pets, moving shadows, or sudden temperature changes that might otherwise be detected by a single sensor. This reliability is especially important in environments where false alarms can lead to safety concerns, increased service costs, or fines from responding authorities.

The other options primarily focus on aspects like range, power consumption, and installation costs, which do not highlight the core benefit of improving detection accuracy and reliability that dual technology motion detectors provide through their dual-sensing approach.