Below, we have listed common Liftmaster and Chamberlain compatible keyless entry systems. Many of the older Liftmaster keyless systems are now obsolete. If you have a keyless that will not program you may need to replace it will the 877 Max. This keyless was created to replace all previous models regardless of frequency. For additional support, email us at

Liftmaster Keyless Entry Manuals

  • 877Max (Replaces keyless models: 66LM, 976LM, 976LG, 977LM, 977LG, 377LG)
  • 377LM