Motion-sensor lighting is a type of lighting system that automatically turns on when it detects movement within a certain range. These lights use sensors, often based on infrared technology, to identify motion and activate the light, providing illumination only when needed. This feature helps save energy and enhances safety in various settings, such as homes, offices, and outdoor areas. Typically installed in hallways, staircases, or entryways, motion-sensor lights can be set to remain on for a specific duration after detecting movement. They are available in various styles and brightness levels, making them suitable for both indoor and outdoor use.