User's Manual

DP770 Instruction Manual 2/27
Safety
Before using this radio, read this operating instruction carefully for safe and convenient usage.
This product can only be maintained by the professional technicians. Do not disassemble the radio
by yourself.
To avoid of the problems caused by electromagnetic interference or electromagnetic compatibility,
turn off the radio in any facilities where posted notices instruct you to do so, such as hospital and
other health care facilities. And when on board an aircraft, turn off the radio if instructed to do so
too.
In the vehicle with an air bag, do not place the radio in the area over an air bag or in the air bag
deployment area.
Turn off the radio before entering any area with a potentially explosive atmosphere or blasting
caps.
Do not operate the radio, disassemble or charge the battery in the potentially flammable and
explosive atmosphere (such as gas station, coal gas station, etc.).
Do not place the radio under the direct sunlight or near the area with heating devices.
Do not place the radio in the area with great dust, moisture or drips, or on the unstable surface.
Contact us or your local dealer for help if you want to re-develop or modify the radio.
Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into
contact with your skin, a minor burn can result.
Make sure the antenna is correctly installed when using. The radio without antenna may cause
damage in the process of transmission.
Keep the radio vertically and away from your mouth about 5cm in the process of transmission.
When worn on your body, make sure the antenna is at least 2.5cm away from your body in the
process of transmission.
Battery
All batteries can cause property damage and/or bodily injury, such as burns, if a conductive
material such as jewelry, keys, or beaded chains touches exposed terminals. The conductive
material may complete an electrical circuit (short circuit) and become quite hot. Excessive care in
handling any charged battery, particular when placing it inside a pocket, purse, or other container
with metal objects. To reduce the potentially damage, do not expose the battery in the fire, or
disassemble and extrude the battery.
The maximum ambient temperature around the adapter or transformer for the charger should not
exceed 40℃ (104℉).
Turn off the radio when charging. If not, the battery’s capacity will be affected.
Do not insert the battery pack into the charger when charging is not necessary. The continuous
charging will shorten the battery’s lifetime. Do not use the charger as the pedestal for the radio.