Life-saving devices are tools designed to prevent loss of life in emergencies. Examples include life jackets, which help keep individuals afloat in water, and defibrillators, which restore a normal heartbeat during cardiac arrest. These devices are essential in various settings, such as homes, schools, and public places. Other important life-saving devices include fire extinguishers, which help control small fires, and smoke detectors, which alert occupants to smoke and potential fire hazards. Additionally, first aid kits provide essential supplies for treating injuries until professional help arrives. Together, these devices play a crucial role in enhancing safety and saving lives.