The product is a set of 2 Honeywell XLS-PS Intelligent Photo Detectors with SIGA-SB Base. These photo detectors are designed to detect changes in light levels, making them ideal for use in smoke detectors as part of a comprehensive fire protection system. Manufactured by Honeywell in India, these detectors are reliable and efficient in monitoring fire hazards in various industrial and commercial settings. With their advanced technology and durable construction, they provide peace of mind for businesses and property owners looking to enhance their fire protection measures.