Additional manufacturing narrative: other, additional manufacturing narrative (if other): the returned device was evaluated which included functional testing.During this testing, the device was able to obtain readings and to visually and audibly alarm during alarm conditions.Investigation into the returned device indicated the front speaker was silent through all tones.No issues with the bottom speaker were detected.The front speaker failure was isolated to an open connection, resulting in no audio being emitted.A service history record review reveals that this unit was in the field for over two (2) years with no previous reported issues prior to this reported event., corrected data: (report source) was updated from "user facility and health professional" to "foreign, user facility, and health professional".
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