Which of the following is a key factor in determining the effectiveness of a smoke detector?

The effectiveness of a smoke detector is significantly influenced by the location of its installation. Proper placement ensures that the detector can accurately detect smoke and alert occupants in a timely manner. For instance, smoke rises, so detectors should be installed on ceilings or high on walls in areas where smoke is likely to accumulate.

Installing smoke detectors in key areas, such as near sleeping rooms and on every level of a home, maximizes their effectiveness. This strategic placement helps ensure that smoke is detected before it spreads too widely, providing vital time for occupants to respond. Factors like the color of the detector, size, or brand do not directly impact functionality to the same extent as the placement, which is crucial for optimal operation.