Canadian Accredited Insurance Broker (CAIB) Two Practice Exam

What is a primary disadvantage of using motion detectors in security systems?

1. They are expensive to install

2. They may fail to detect all movement

3. They can result in too many false alarms

4. They require regular maintenance

The correct answer is: They can result in too many false alarms

The primary disadvantage of using motion detectors in security systems lies in the potential for generating too many false alarms. Motion detectors are designed to identify movement within their designated coverage area. However, various factors such as small animals, environmental changes, or even people moving in and out of a monitored space can trigger these detectors unintentionally. This propensity for false alarms can create significant issues, including unnecessary responses from security personnel, annoyance for the property owner, and potential fines from authorities due to repeated false triggers. Managing these false alarms is crucial for maintaining the reliability and effectiveness of a security system. While it's true that motion detectors can be expensive to install, may fail to detect all movement, and require regular maintenance, these elements do not primarily define their most significant disadvantage in practice. The occurrence of false alarms is particularly problematic for users, leading to a distrust of the system and potential complacency about security, which can undermine the overall effectiveness of the protection strategy.