CHAD OXYMATIC OM-400 Electronic Oxygen Conserver OM411A w Cylinder Wrench Keys

Description

From an estate. Untested, as I have no oxy tank, but the unit does light up and shows a good battery (C battery not included). Please ask any questions. As-is, as-found.
There is nothing more than what is in the photos.
No other parts are included unless specifically stated.
Please zoom in on the XL pictures for further details on condition.
They are an important tool in assisting with my description.
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