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LiftMaster: 1240R, 1245R, and 1255R Manual, Remotes and Parts

Overview: LiftMaster Garage Door Openers Model Series 1200

Whether you are looking for the LiftMaster 1240R manual, Liftmaster 1245R manual, or the Liftmaster 1255R manual, you’ll find all of the models in one owner’s manual which can be downloaded below. The detailed operator manual, is crucial for installation, troubleshooting, and maintenance. The manual provides comprehensive instructions and safety information to ensure the proper functioning of your garage door opener. It includes a variety of topics ranging from planning, assembly, installation, adjustment, operation, and programming, to repair parts and warranty information.

The 1240R model has a 1/4 hp motor, the 1245R and 1246R models have a 1/3 hp motor and the 1255R and 1256R models have a 1/2 hp motor. All of the models are chain drive units and operate on the 390MHz Security+ frequency.

Liftmaster 1245R Manual

How to Program a Remote

Programming your LiftMaster remote is a straightforward process. Here’s a step-by-step guide to help you through it:

Liftmaster orange Learn Button
  1. Locate the Learn Button: Open the light lens on your garage door opener to access the Learn button.
  2. Press and Release the Learn Button: Press and release the Learn button. The LED next to it will light up.
  3. Press the Remote Button: Within 30 seconds, press and hold the button on your remote control that you wish to program.
  4. Wait for the Click: Release the button when the garage door opener motor unit lights blink. It is a sign that the remote control has been programmed.

Compatible Remotes

The compatible remotes and keypad for the Liftmaster 1200 series of garage door operators with the red/orange Learn button are the 971LM 1-Button Remote, 973LM 3-Button Remote, 970LM Keychain Remote and the 977LM Wireless Keyless Entry. As of this writing, the 971LM Remote is still being produced and is available but the others have been discontinued. If you want a 3-button remote, a keychain remote or a wireless keypad then you should use the 893MAX Liftmaster 3-Button Remote, 890MAX Liftmaster Keychain Remote and the 878MAX Liftmaster Wireless Keyless Entry respectively.

Want to see how the 971LM Remote is programmed? Check out this 971LM Programming Video

Common Replacement Remotes and Parts





971LM Liftmaster Remote

  • 1-Button Remote

893MAX Liftmaster Remote

  • 3-Button Remote

890MAX Liftmaster Remote

  • 3-Button Keychain Remote

878MAX Liftmaster Keyless Entry

  • Wireless Keyless Entry





41C4220A Gear Assembly

  • Replacement Gear Assembly

374UT Liftmaster Universal Remote

  • Universal 2-Button Remote

041-0136 Liftmaster Safety Sensors

  • Replacement Safety Sensors

Thinking about upgrading to a new garage door operator? Read more about the Liftmaster 85870 3/4HP Garage Door Opener

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