Heartsine's investigation of the device confirmed the reported fault, as on receipt the device was issuing no audio prompts.The fault was attributed to a failure of the speaker, which may have been caused by external mechanical influences (e.G.Vibrations or impact).The failure of the speaker did not prevent the device from delivering shock therapy, as demonstrated during the investigation, as the device continued to prompt therapy via the instructional leds.However, absence of voice prompts may lead to an inability understanding how to use the device correctly, which could result in adverse consequences.
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