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Operation
Transmitting range
The talk range depends on the environmental and terrain. It should be longest (up to
about 10 km) in wide open spaces, without obstructions such as hills or buildings.
Don’t try to use two PMR units which are less than 1.5 m (5 feet) apart. If you do,
you may experience interference.
Turning the TwinTop 400/400-L ON/OFF
To turn ON
Press and hold the POWER key until the LCD screen turns ON and
displays the current channel.
To switch OFF
Press and hold the POWER key until the LCD screen turns blank.
You can hear a tone each time to confirm.
Adjusting the speaker volume
The volume level is shown by vertical bars on the LCD screen. You can change the
volume while using your TwinTop 400/400-L, or while the unit is idle (switched on
but not in use).
Press the UP key to increase, or press the DOWN key to decrease the speaker volume.
Important safety warning
–To reduce radio frequency exposure when you are using your TwinTop 400/
400-L, hold the unit at least 5 cm (2 inches) away from your face.
– Never use your TwinTop 400/400-L outdoors during a thunderstorm.
– Don’t use the TwinTop 400/400-L in the rain.
– If your TwinTop 400/400-L ever gets wet, turn it off and remove the batteries.
Dry the battery compartment and leave the cover off for a few hours. Don’t
use the unit until it is completely dry.
– Keep the TwinTop 400/400-L out of the reach of babies and young children.
