Dispensers are devices designed to release a specific amount of a product, such as liquids, powders, or other materials, in a controlled manner. Common examples include soap dispensers, which provide a measured amount of liquid soap, and paper towel dispensers, which dispense single sheets of paper towels for drying hands. These devices are widely used in various settings, including homes, restaurants, and public restrooms, to promote hygiene and reduce waste. Dispensers can be manual, requiring a push or pull action, or automatic, using sensors to detect when a user is present, ensuring convenience and efficiency in usage.