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The device was not returned even after multiple attempts; however, the customer provided pictures of the alarm in question.This event is reported solely on the information provided by the customer.A review of the images provided by the customer shows surface scratches and sticky residue on the exterior housing as signs of normal wear and tear.The image of the sensor receptacle has bent connector pins inside that may have contributed to reported issue for not functioning properly.This could be caused by removing the sensor connector rj-11 of the sensor pad without pushing on the release tab, by stretching the sensor cable such as the cable being caught with a bed mechanism or heavy equipment, or by inserting a foreign object into the sensor receptacle causing the connector pins inside to be bent.Being that the unit is four years old since it was manufactured, it is unlikely that manufacturing non-conformity contributed to the reported complaint, and the most probable cause is normal wear and tear.An investigation of similar complaints revealed several potential causes, including damage to either the alarm sensor receptacle or the sensor rj-11 clip.Damage to the sensor receptacle can cause the pins inside to become stuck down, either triggering no alarm or false alarm.It can also cause the sensor cable to not have a secure fit with the receptacle, allowing for movement to affect the function.Likewise, with damage to the sensor cable clip.Other causes, such as corrosion and moisture damage, are also a possibility.At this time, there is no evidence that a manufacturing non-conformity contributed to the reported complaint, and the instructions for use were reviewed and determined to provide adequate instructions and warning for the safe and effective use of the device.Therefore, no corrective or preventative actions are necessary.All complaints are trended and reviewed by management on a monthly basis.As part of this monthly review, any excursion above the control limits for this failure mode will be assessed, documented, and acted upon as warranted.Manufacturer reference file (b)(4).
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