It has been found that philips telemetry units specified can overheat dramatically.This is usually noted by the patient, and will cause a low battery alarm with fairly new batteries.The overheating has split battery casings.Devices use standard aa batteries.We have tried multiple varieties to make sure there was not an issue with the battery.The units are pulled from service and sent to philips for repair; philips claims to replace certain boards or connections, without specifying in detail.Recently the frequency of such incidents has increased.There have been 8 documented incidents at this facility.This has affected m4841a transmitter models with software versions c.00.51 and c.00.58.Manufacturer response for telemetry transmitter, (brand not provided) (per site reporter): philips replaced the outer case and the main power board.
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