This includes one Turner Designs TD-20/20 Luminometer. This equipment came from bulk government surplus and is being listed here for a great discount. We don't have familiarity with this type of equipment and we also don't have the OEM power adapter, so we are listing it for parts as we are unable to test it further. We have included many photos to help you make your best decision. Please ask any questions and we will do our best to answer.