A safety device is a tool or mechanism designed to protect people from harm or injury in various situations. These devices can be found in many environments, such as homes, workplaces, and vehicles. Common examples include smoke detectors, seat belts, and fire extinguishers, which help prevent accidents and minimize risks. Safety devices often incorporate technology to enhance their effectiveness. For instance, carbon monoxide detectors alert users to dangerous gas levels, while airbags in cars provide cushioning during collisions. By using these devices, individuals can create safer surroundings and reduce the likelihood of accidents or injuries.