An emergency light is a portable or fixed lighting device designed to provide illumination during power outages or emergencies. These lights are often powered by batteries and automatically turn on when the main power supply fails. They are commonly used in homes, offices, and public buildings to ensure safety and visibility in dark conditions. Emergency lights can come in various forms, including wall-mounted units, flashlights, and lanterns. Many are equipped with features like LED bulbs for energy efficiency and longer battery life. They are essential for guiding people to safety during emergencies, such as fires or natural disasters, and are often part of safety regulations in commercial buildings.