Retevis RT639 Mode D'emploi page 12

• Turn down the volume before adding headset or
earpiece.
• Limit the amount of time you use headsets or
earpieces at high volume.
• When using the radio without a headset
or earpiece, do not place the radio's speaker
directly against your ear
• Use careful with the earphone maybe possible
excessive sound pressure from earphones and
headphones can cause hearing loss
Note: Exposure to loud noises from any source
for extended periods of time may temporarily or
permanently affect your hearing. The louder the
radio's
volume, the less time is required before
•your hearing could be affected. Hearing damage
from loud noise is sometimes undetectable at first
and can
have a cumulative effect.
Avoid Burns
Antennas
•Do not use any portable radio that has a damaged
antenna. If a damaged antenna comes into contact
WARNING
with the skin when the radio is in use, a minor burn
can result.
Batteries (If appropriate)
•When the conductive material such as jewelry,
keys or chains touch exposed terminals of the
batteries, may complete an electrical circuit (short
circuit the battery) and become hot to cause bodily
injury such as burns. Exercise care in handling any
battery, particularly when placing it inside a pocket,
purse or other container with metal objects
Long transmission
•When the transceiver is used for long
transmissions, the radiator and chassis will
become hot.
Safety Operation
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