In a UL burglar alarm system, how should motion detectors be installed?

In a UL burglar alarm system, motion detectors should be installed to minimize the influence of outside movement in an unprotected area. This is crucial because the primary purpose of motion detectors is to reliably detect intrusions while reducing false alarms triggered by external factors such as animals, vegetation movements, or passing vehicles.

By strategically placing detectors to avoid areas where outside movement could interfere with their performance, the system becomes more effective in distinguishing between legitimate threats and benign disturbances. Proper placement helps maintain the integrity of the alarm system's functionality, ensuring that it responds only to genuine intrusions that pose a security risk.

This approach not only enhances the reliability of the alarm system but also increases users' trust in the system, as they will experience fewer false alarms and greater security confidence.