Works with LiftMaster, Chamberlain, Sears Craftsman Security+ versions of garage door openers on the 390MHz frequency manufactured between 1997 and 2005 that have the RED or ORANGE learn button. LiftMaster: 91LM, 92LM, 94LM, 96LM, 971LM, 972LM, 973LM, 973W, 974LM.
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