Widex CROS-FS - Manual (Page 30)

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• Do not use the transmitter in mines or other areas with explosive
gases .
• do not wear your transmitter during radiation, x-rays, MRis, Ct or
other similar medical treatments and scans . the emissions from
these procedures as well as from other types of radiation, such as
that in a microwave oven, can damage your device and it can become
very hot . radiation from, for example, room surveillance equipment,
burglar alarms and mobile phones is weaker and will not damage the
device, but may create audible interference .