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LiftMaster 878MAX

Wireless keyless entry for LiftMaster openers made since about January 1993 (learn-button eras). Retailers list it as the replacement path for several discontinued keypads.

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Often replaces

66LM, 976LM / 977LM, 377LM, 877LM, 877MAX (and some Raynor / LG private-label keypad numbers in dealer lists).

Fit notes

  • Same post-1993 learn-button world as MAX remotes — confirm green / red-orange / purple / yellow
  • Pre-1993 DIP-switch openers are out of scope
  • One-button-to-close features are often described for openers from ~2006 onward
  • Newer white Security+ 3.0 openers may need a different current keypad SKU — check OEM tools

Sources