Chamberlain LiftMaster PROFESSIONAL SECURITY+ 3800C Mode D'emploi page 28

Your garage door opener remote work light has already been programmed at the factory to operate with your opener.
Any additional or replacement remote work lights will need to be programmed.
1. Press the "learn button" on light until
LED comes ON.
2. Activate the garage door using the
hand-held remote, wall control or
keyless entry.
3. It has learned the code and the light
turns on.
All manuals and user guides at all-guides.com
Reprogramming Light or Additional Light
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