This instrument appears to be in good condition. It comes with a charger/printer that also seems to work well but which became separated from the paper cover during the surplus process. The P/N for the door is 761013-501
According to the manufacturer:
The Welch Allyn MicroTymp2 provides portable tympanometry which is automatic, easy to use, and offers the following features:
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.