The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196

www.liftmaster.com

®

GARAGE DOOR OPENER
Model 3850PC

 

 

 

 

 

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For Residential Use Only

 

 

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Owner’s Manual

Please read this manual and the enclosed safety materials carefully!

Fasten the manual near the garage door after installation.

The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned.

Periodic checks of the opener are required to ensure safe operation.

The model number label is located under the light lens on the left side panel of your opener.