Retevis RT638 Operating Instructions Manual page 13

Small Parts. Not for children under 3 years.
•Turn off your radio before removing (installing) a battery or accessory or when charging battery.
•Turn off your radio when you are in a potentially hazardous environments: Near electrical blasting
caps, in a blasting area, in explosive atmospheres (inflammable gas, dust particles, metallic
powders, grain powders, etc.).
WARNING
•Turn off your radio while taking on fuel or while parked at gasoline service stations.To avoid
electromagnetic interference and/or compatibility conflicts
•Turn off your radio in any facility where posted notices instruct you to do so, hospitals or health care
facilities (Pacemakers, Hearing Aids and Other Medical Devices) may be using equipment that is
sensitive to external RF energy.
•Turn off your radio when on board an aircraft. Any use of a radio must be in accordance with
applicable regulations per airline crew instructions.
Protect your hearing:
• Use the lowest volume necessary to do your job.
• Turn up the volume only if you are in noisy surroundings.
• Turn down the volume before adding headset or earpiece.
• Limit the amount of time you use headsets or earpieces at high volume.
WARNING
• 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 requiredbefore
•your hearing could be affected. Hearing damage from loud noise is sometimes
undetectable at first and can have a cumulative effect.
Avoid Burns
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