Check the listing for details. Hewlett Packard Ultrasound Transducer Probe, 21202A - Free Shipping. Condition: Used. Listed at 122.99 USD. Hewlett Packard Cardaic Ultrasound Transducer Probe, 21202A16171, Serial No: 3412A078552.5/2.0 Hz From a closing medical facility. Untested but presumed to be working well. Nathan Czuba, Illinois Industrial Reuse / Czubin Industries, Chicago, IL, 618.559.4300. This unit has been cleaned and handled in accordance with the manufacturer's instructions. Required eBay statement for medical items: "The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item."