Which factor is crucial for motion detector placement in a home?

The crucial factor for motion detector placement in a home is height above floor level. This is important because the sensor's effectiveness largely depends on its ability to detect movement within its optimal range. Generally, motion detectors are designed to be installed at a specific height—typically around 6 to 8 feet—where they can effectively cover a wide area and have the best chance of detecting motion without obstructions.

When placed at an appropriate height, motion detectors can more accurately sense the movement of individuals within their coverage area, maximizing their effectiveness. If a detector is placed too low, it may not capture activity correctly, while if it's too high, it may overlook movements entirely or become too sensitive to environmental factors, resulting in false alarms.

Other factors, such as distance from windows, visibility of pets, and proximity to electrical outlets, play roles in overall installation considerations but do not directly influence the primary function of detecting motion. For instance, while windows may cause reflections and affect detection, and electrical outlets are necessary for powering the device, the height at which the detector is installed remains the most critical aspect for effective motion detection in a home environment.