Sold under the ASCOM Energy Systems brand I assume this cardiac reader to be an accessory to a larger system, perhaps one called a Miditron, as it is a Meditron Junior. I do not think it new or large enough to be a self-contained reader and have not seen anything on the www that states what it does. It has only one port and no apparent frequency receiver capability. It came as an orphan with a large lot of surplus medical equipment.
If you find the item is not as described in the ad it may be returned for a purchase price refund. Generally, all of our items have an inspection warranty which kicks in upon delivery for a period of 7 to 14 days. It is not an operational warranty as most items sold on DOTmed require biomedical certification before use. If you require additional coverage please contact us prior to purchase.