Safety devices are tools or systems designed to protect people from harm or injury. They are commonly used in various settings, such as homes, workplaces, and vehicles. Examples include smoke detectors, seat belts, and fire extinguishers, which help prevent accidents and respond to emergencies. These devices often work automatically or require minimal user intervention. For instance, smoke detectors alert occupants to smoke or fire, while seat belts secure passengers during a vehicle crash. By incorporating safety devices, individuals can significantly reduce the risk of accidents and enhance overall safety in their environments.