Chamberlain 3850 - User Manual

Chamberlain 3850

Chamberlain 3850 – User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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

GARAGE DOOR OPENER

Models 3850

3850-267

For Residential Use Only

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.

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