This set includes ten Apollo XP95 optical smoke detectors, which are ideal for use in ensuring fire protection in commercial and industrial facilities. The detectors are brand new and have not been used before, making them a reliable choice for your fire safety needs. They are specifically designed to detect smoke and quickly alert occupants of a potential fire, ensuring that everyone can evacuate safely and quickly. With the Apollo brand name and the XP95 technology, you can trust that these detectors will provide the best possible protection for your workplace or property.