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

www.liftmaster.com

®

COMMERCIAL DOOR OPENERModel ATS 211X 1/2 HP

For Residential And Light Duty Commercial Use

Install on Sectional Doors 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 on the front panel of your opener.