Garage Door Repair & InstallationOpen 24 Hours — 7 Days a Week
Anderson Garage Door Service
Call for Service
(203) 902-3902
Brands we service & repair

LiftMaster, Chamberlain, Genie, Wayne Dalton, Clopay, and Amarr.

LiftMaster / Accessory reference

LiftMaster L991S

LiftMaster L991S: One-button remote for one LiftMaster Security+ 3.0 garage-door opener.

US source scopeUpdated 2026-09-15Independent Anderson reference

Match the whole number.

Manufacturer identifier: L991S. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detailOne-button remote for one LiftMaster Security+ 3.0 garage-door opener.
View source and citation details
Supplier-stated detailThe supplier describes myQ app setup and management and a range of up to 1,300 ft when conditions permit.
View source and citation details
Selection limitationDenco’s listing does not identify exact opener models or verify earlier protocol generations. The app prerequisite from another remote cannot establish this remote’s requirements. The model pairings below have separate GAS Hardware sources and conditions.
View source and citation details

Documented fitment & exclusions

Read the exact equipment or component, market, production and variant limits in every row. An omitted pairing has not been verified by this reference.

Source statements and their exact conditions. Use the checker below to compare equipment or a component.
Equipment or component / relationshipEvidence and conditions
2100L

Documented compatibility

From L991S to 2100L.

Conditional

Additional source conditions or an adapter must be checked before confirming compatibility.

Details still needed
  • source conditions

Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified.

GAS Hardware lists L991S for 2100L, subject to the stated source conditions and installed-equipment check.

Applies only within this source scope
  • Market: US
  • GAS Hardware names this exact opener for L991S; confirm the installed model and required remote functions.
  • This is a supplier application statement, not a physical pairing test. No reverse or family-wide compatibility is inferred.
  • The source does not state a protocol; no protocol requirement is borrowed from another remote.
  • GAS Hardware source: L991SDescription: explicit Basic/Premium/Plus Series application list: 2100L · checked 2026-09-13 · GAS Hardware
2220L

Documented compatibility

From L991S to 2220L.

Conditional

Additional source conditions or an adapter must be checked before confirming compatibility.

Details still needed
  • source conditions

Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified.

GAS Hardware lists L991S for 2220L, subject to the stated source conditions and installed-equipment check.

Applies only within this source scope
  • Market: US
  • GAS Hardware names this exact opener for L991S; confirm the installed model and required remote functions.
  • This is a supplier application statement, not a physical pairing test. No reverse or family-wide compatibility is inferred.
  • The source does not state a protocol; no protocol requirement is borrowed from another remote.
  • GAS Hardware source: L991SDescription: explicit Basic/Premium/Plus Series application list: 2220L · checked 2026-09-13 · GAS Hardware
2300L

Documented compatibility

From L991S to 2300L.

Conditional

Additional source conditions or an adapter must be checked before confirming compatibility.

Details still needed
  • source conditions

Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified.

GAS Hardware lists L991S for 2300L, subject to the stated source conditions and installed-equipment check.

Applies only within this source scope
  • Market: US
  • GAS Hardware names this exact opener for L991S; confirm the installed model and required remote functions.
  • This is a supplier application statement, not a physical pairing test. No reverse or family-wide compatibility is inferred.
  • The source does not state a protocol; no protocol requirement is borrowed from another remote.
  • GAS Hardware source: L991SDescription: explicit Basic/Premium/Plus Series application list: 2300L · checked 2026-09-13 · GAS Hardware
2420L

Documented compatibility

From L991S to 2420L.

Conditional

Additional source conditions or an adapter must be checked before confirming compatibility.

Details still needed
  • source conditions

Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified.

GAS Hardware lists L991S for 2420L, subject to the stated source conditions and installed-equipment check.

Applies only within this source scope
  • Market: US
  • GAS Hardware names this exact opener for L991S; confirm the installed model and required remote functions.
  • This is a supplier application statement, not a physical pairing test. No reverse or family-wide compatibility is inferred.
  • The source does not state a protocol; no protocol requirement is borrowed from another remote.
  • GAS Hardware source: L991SDescription: explicit Basic/Premium/Plus Series application list: 2420L · checked 2026-09-13 · GAS Hardware

Direct replacement paths

No direct successor for L991S is verified in this reference.

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

Compare exact equipment or a component.

Check a part or accessory pairing

Loading part or accessory choices…

Selected: L991S · Read its reference. Selection identifies a record; it does not confirm fitment.

Choose the equipment or accessory brand separately from the component brand. A missing identifier is unverified. Use the model library to identify your equipment and its source documents.

An accessory pairing, including a receiver or wall console, applies only to the exact listed pair and source conditions. It does not establish suitability for your installed opener or compatibility through another device.

Choose the equipment or accessory brand to load its published identifiers.

Use the production date on the label or records, not the purchase date. Leave blank if unknown.

Use part and model numbers only. Never enter a serial number, PIN or access code. Your entry is used for this lookup and is not put in the page address, saved in browser storage or sent to analytics.

Choose a task and enter or select an exact identifier.

Recall references

No recall reference is included for this identifier in the published dataset. This is not a safety clearance or proof that no recall exists.

Sources & scope

  1. Denco supplier reference: RC L991SDenco · US · checked 2026-09-12
  2. GAS Hardware source: L991SGAS Hardware · US · checked 2026-09-13

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.

Related equipment guides

Confirm a missing detail

Use LiftMaster official support and match the complete part number, equipment model and production details with the source scope.

Use safely accessible labels and existing paperwork. Do not remove powered covers or adjust springs or cables to identify a component.

Need help with an opener or control problem?

Garage Door Opener Repair: what an inspection or installation involves →

Share the equipment label and symptom. Availability is confirmed for the exact service address before scheduling. This reference does not establish a fault, part fitment, or repair availability for a particular model.

This is an independent Anderson reference. Manufacturer names identify the equipment and do not imply affiliation or authorized-dealer status.

A reference listing does not establish current stock, a price, eligibility for manufacturer support or that a component is faulty.

One Request. Three Simple Steps.

Let’s start with your door.

No need to leave this page. You can change your answers at any step.

  1. 1 The problem
  2. 2 Your location
  3. 3 Contact details

Your request is sent to Anderson. Appointment timing and any visit charge are confirmed with you.

What do you need help with?

Selected service: Opener repair. You can change this. Reason: Reference: LiftMaster L991S.

If the door is crooked or partly open, keep clear. Do not adjust springs or cables yourself.

From our customers

What customers say on Google

G5.0★★★★★9 reviews
6 written Google reviews

Mama Bear

3 weeks ago

G
★★★★★
The service was fantastic- courteous, knowledgeable and honest.
Excerpt from Google review

Yehuda Robinov

a month ago

G
★★★★★
Very very professional guys good jobs good service

adam ricker

3 months ago

G
★★★★★
Great worker

David Avitan

3 months ago

G
★★★★★
They replaced three garage door motors for me, and the service was excellent from start to finish.
Excerpt from Google review

Mary larson

4 months ago

G
★★★★★
Very good service and very polite

Tippawan Markmaitree-Babin

4 months ago

G
★★★★★
Very good work, polite and flexible in scheduling appointments.

Reviews from Google. Rating and relative dates checked October 1, 2026. This is a dated snapshot, not a live feed.

Serving your home with pride

Check service availability in your area.

Call now to discuss the problem and check availability for your ZIP. The exact service address is confirmed before scheduling.

Call (203) 902-3902