Both are current LiftMaster remotes, but the official green LEARN-button list includes L992U and omits L993M.
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The difference that matters
These labels may look close on a marketplace listing, but the published technology or lifecycle is different. Compare the printed model code and opener system before ordering.
| Option | System or coverage | Decision note |
|---|---|---|
| L993M | White / yellow / purple / red-orange | No current green listing |
| L992U | White / yellow / purple / red-orange / green | Family listing, exact opener unverified |
How to decide safely
Find the opener model and named technology in the official manual. An unlisted system stays unverified; a discontinued product stays informational. Neither a similar casing nor a shared MHz value proves compatibility.
Green is the deciding example
Imagine an opener whose LEARN button is green. The current LiftMaster chart lists L992U for that group but not L993M. With a yellow round button, both names appear in the checked remote list. That contrast is more useful than comparing “MAX” and “universal” marketing labels alone. Recheck the physical opener before selecting either product because this is still family-level evidence.
Model-specific Amazon searches
Check the LEARN-button table first: L992U appears in the green row, while L993M does not. The marketplace links search exact model strings rather than promising a particular seller or fit.
- (paid link) Search LiftMaster L993M on Amazon
- (paid link) Search LiftMaster L992U on Amazon
These links open Amazon search results, not a verified individual listing. Compare the exact manufacturer model and your opener manual before buying.
Official sources and review scope
These links support the claims on this page. Check your exact model and the manufacturer's latest revision before buying or programming.
- LiftMaster remotes/keypads learn-button compatibility support.chamberlaingroup.com · checked 2026-11-04 · Current model lists by white/yellow/purple/red-orange/green LEARN button