Night Lights, also called night-lights, are small lights that are placed in a room or hallway at night to help people move around safely. They may be plugged into a wall outlet or operated by batteries. Some are lit continuously, while others have motion sensors that activate when a person passes by. Night lights provide a convenient source of low-level illumination. This can help make it easier for people to see and avoid obstacles in a dark and unfamiliar environment. In young children and elderly adults, night lights may be especially helpful. They can help reduce anxiety or fear of the dark. In addition to homes, night lights are found in a wide variety of commercial settings. For example, they may be used in hotel halls, stairwells, or other public areas. Night lights can also be used to provide emergency lighting in the event of a power outage. For many people, night lights bring feelings of comfort and security. They can be sweet reminders of those childhood nights when a nightlight provided the perfect amount of light to keep the monsters away and make sleep just a little bit easier.