LiftMaster / Accessory reference

LiftMaster 371LM

LiftMaster 371LM: One-button LiftMaster Security+ transmitter operating at 315 MHz.

US source scopeUpdated 2026-09-12Independent Anderson reference

Match the whole number.

Manufacturer identifier: 371LM. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Denco supplier reference: RC 371LM*h1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detail	One-button LiftMaster Security+ transmitter operating at 315 MHz. Denco supplier reference: RC 371LM*h1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco
Supplier-stated detail	The supplier reports 371LM discontinued and names L993M as a replacement. Denco supplier reference: RC 371LM*h1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco
Selection limitation	The listed supplier number is RC 371LM, including its asterisk. Check L993M’s own scope and required functions before selecting it for an installation. Denco supplier reference: RC 371LMh1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco

Documented fitment & exclusions

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A component pairing applies only to the listed items and source conditions. It does not establish suitability for an installed opener or compatibility through another component.

Source statements and their exact conditions. Use the checker below to compare equipment or a component.
Equipment or component / relationship	Evidence and conditions
395LM Documented compatibility From 395LM to 371LM.	Denco group scope and separately reviewed membership associate 395LM with 371LM for the stated function. Applies only within this source scope Market: US connection-purpose: 395LM light or small-appliance switching through the named remote. Bounded Denco supplier group association; verify the stated configuration. No physical or human engineering certification. Load rating, outlet voltage and supported appliance limits are not supplied here. Confirm electrical suitability; this is not an arbitrary-load or downstream opener claim. Denco supplier reference: RC 395LMh1; span.sku; Description two bullets: explicit LiftMaster315MHz remote group and wall-outlet connection · checked 2026-09-12 · Denco Denco supplier reference: RC 371LM*h1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco

Direct replacement paths

L993M
Conditional
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Details still needed
- replacement-purpose
- replacement-scope
- source conditions
Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified.
Denco names L993M as a replacement for 371LM. The cited successor description limits myQ app features to Security+ 3.0 and Security+ 2.0 garage-door openers. No exact installed model is identified.
Applies only within this source scope
- Market: US
- replacement-purpose: Replacement of the exact named remote or keypad; installed receiver and required functions must be checked.
- replacement-scope: LiftMaster garage, gate or commercial operators manufactured after 1997; up to three operators.
- Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test.
- The cited successor description limits myQ app features to Security+ 3.0 and Security+ 2.0 garage-door openers. No exact installed model is identified.
- Denco supplier reference: RC 371LM*h1; span.sku; Description discontinuation/replacement bullet and protocol/frequency bullets · checked 2026-09-12 · Denco
- Denco supplier reference: RC L993Mh1; span.sku; Description bullets: brand/date/three-operator scope, auto detection and myQ generation scope · checked 2026-09-12 · Denco

A direct replacement statement does not establish reverse interchangeability, a kit equivalent or a later replacement chain.

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Selected: 371LM · Read its reference. Selection identifies a record; it does not confirm fitment.

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Equipment market

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Recall references

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Sources & scope

Denco supplier reference: RC L993MDenco · US · checked 2026-09-12
Denco supplier reference: RC 371LM*Denco · US · checked 2026-09-12
Denco supplier reference: RC 395LMDenco · US · checked 2026-09-12

Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.

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