Widex COM-Dex Remote Mic Manual De Instrucciones página 79

Warnings
Do not use the device in mines or other areas with explosive gases.
Do not expose to extreme temperatures or high humidity.
When the device is connected via micro USB cable to external mains-
operated equipment such as a charger, PC, audio source or similar, this
equipment must comply with IEC 60065, IEC 60950-1, IEC 60601-1 or
equivalent safety standards.
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