70 71
Date of manufacture
Serial number
Transportation and storage temperature limitation
Transportation and storage humidity limitation
Transportation and storage atmospheric pressure
limitation
Keep dry
This symbol confers that the electromagnetic
interference from the device is under limits approved
by the US Federal Communications Commission.
This symbol indicates that this is a Prescription Device.
CAUTION: U.S. Federal law restricts this device to
sale by or on the order of a physician or hearing care
professional (for US only).
This symbol indicates that it is important for the user to
pay attention to the relevant warning notices related to
batteries in these user guides.
Symbols applicable to the European power supply only
Power supply with double isolation
Device designed for indoor use only.
Safety isolating transformer, short circuit
proof
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