liftmaster 977lm... | Answered on Dec 10, 2014
liftmaster 977lm... | Answered on May 27, 2011
NOTE: This method requires two people if the Keyless Entry is already mounted outside the garage.
Change an Existing, Known PIN
If the existing PIN is known, it may be changed by one person without using a ladder.
The motor unit lights will blink once when the PIN has been learned.
Test by pressing the new PIN, then press ENTER. The door should move.
Your new Keyless Entry must be programmed to operate your garage door opener
liftmaster 977lm... | Answered on May 24, 2011
liftmaster Home... | Answered on Sep 14, 2017
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