Brigmton BDVD-613-USB Manual Del Usuario página 39

Removing the remote control batteries
Use only 1.5V AAA UM-4 batteries and watch polarity (+/-) when
installing them (two batteries are needed). Remove batteries if you are
not using the device during long periods of time.
Point your remote control directly to the IR receiver of your DVD.
The maximum angle is 30º and the maximum distance is 7 meters to
obtain an optimal performance.
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