Check the listing for details. System Sensor DNR Intelligent Smoke Duct Detector Innovair Flex. Condition: New – Open box, Made in Mexico. Listed at 84.95 USD. The System Sensor DNR Intelligent Smoke Duct Detector Innovair Flex is a high-quality smoke detector designed for commercial and industrial facilities. With its innovative technology and reliable brand reputation, this unit provides advanced detection capabilities to ensure the safety of your property. The DNR model offers a comprehensive solution for monitoring smoke levels in duct systems, providing peace of mind for businesses and industrial operations. The item is new; only the box is slightly damaged—nothing that affects the product itself. We have highlighted the condition of both the item and the box in the photos. Please examine the photos carefully; if you have any doubts or questions, send me a message, and I will respond as soon as possible.