SEFRAM MW9520 Manuel D'utilisation page 45

(10) CODE Button
Press and hold it for more than 1 second to enter
into the code selection mode, the "CODE" symbol
will be flashing on the LCD. There are 8 codes to
select: F, E, H, d, L, C, O, A.
(11)  Button
Press it to select the level upwards when the
transmitter is in the level selection mode.
Press it to select the code upwards when the
transmitter is in the code selection mode.
(12)  Button
Press it to select the level downwards when the
transmitter is in the level selection mode.
Press it to select the code downwards when the
transmitter is in the code selection mode.
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