http://www.chamberlain-diy.com/pdfdocs/114A1902.PDF
Yes, that is a billion code unit.
This is a manual for a unit that uses the same replacement control board. Your unit might have more or less lights or other minor differences.
I am not sure, but I seen comments that imply that the for the billion code system the remotes come fixed with a code and can't be changed. If that is the case then you need to replace the remotes and then earase and reprogram for the new one(s).
You can try removing the batteries from the remotes and press the button to use up an power. Then wait a couple of minutes before replacing the battery.
But if the code is built in it won't do any good.
You might verify this with with either Chamberlain or AAARemtoes.
Here is a link with replacement remotes.
http://www.aaaremotes.com/liftmaster81lm.html |
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