Check the listing for details. Datex Ohmeda Flow Sensor Part 1503-3858-000 Untested. Condition: Used. Listed at 80.00 USD. The item appears to be in good overall condition. It was acquired from a medical equipment auction and is believed to be functional. However, I do not have the means to test it or verify its full functionality. Therefore, it is being sold as untested and without any guarantee of performance. As required by eBay: The sale of this item m ay be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If the item is subject to FDA regulation.