PERFECTPRO ROCKHART BT Mode D'emploi page 12

IMPORTANT:
The mains plug is used as the means of connecting the radio to
the mains supply. The mains socket used for the radio must remain
accessible during normal use. In order to disconnect the radio from
the mains completely, the mains plug should be removed from the
mains outlet completely.
3. Powered via DC IN socket
The radio can be also powered via the DC IN socket which can
allow 2 Volt DC, which is designed to be powered by the vehicle
or the boat so you can take the radio with you outdoors or on the
boat.
An additional cigarette lighter cable is required (not supplied) for
this device.
Note:
Never use the 2 Volt socket in rainy or moist conditions to prevent
moist from entering the radio. Always keep the rubber cover on the
back well closed under these conditions.
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