This Thermo Cytomat 6002 Dry / Refrigerated Automated Incubator 50075301 has been tested and is guaranteed to be functional. Please note: One issue worth noting is the fan located inside the chamber (photo #7) seems to be stuck and is not functioning properly. Repair/replacement may be required. This incubator came from a local lab that had surplus equipment. We urge customers to view all photos as they show overall condition, included accessories and functionality. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions.