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Check learn-button color / opener era before buying a replacement.

LiftMaster 81LM → 893MAX

Discontinued 1-button remote from the Billion Code ~390 MHz family. Current path on MAX manuals / dealer maps: 893MAX.

discontinued Billion Code ~390 MHz
Shop 893MAX on Amazon Learn-button guide
81LM
→
893MAX
FieldValue
Old part81LM
EraBillion Code ~390 MHz
Buttons1
Usual successor893MAX
Also consider890MAX, 895MAX
Siblings82LM, 83LM, 84LM
Must verifyLearn-button color; gate/commercial receiver if not a standard residential head

Sources