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Linear / Garage door opener / Model guide

Linear LSO50: manual, model suffixes and sensor indicators

Find the LSO50 homeowner instructions, distinguish documented model coverage from package contents, and read the receiver indicator meanings.

United States documentationSources checked 2026-09-11Independent Anderson reference

Match the model before choosing a document

Identifier: LSO50. Keep every letter and suffix on your product label when checking applicability.

Linear’s official manual index lists LSO50, LSO50-2T1KB and LSO50-2T1KB8 against the same homeowner instructions. This establishes the listed document association, not identical rail lengths or package contents.

Choose the homeowner instructions for operation and indicator explanations; choose product literature for the base opener’s advertised specifications. Keep the complete model and suffix when comparing your label with either document.

In the LSO50 homeowner instructions, the receiver’s green light indicates power. A steady red light indicates the beam is received; a blinking red light indicates poor alignment. These sensor indicators are different from flashes of the opener’s courtesy lamps.

The same manual’s troubleshooting table associates three courtesy-lamp flashes with a safety-beam obstacle. Do not use a model lookup as a diagnosis, bypass a sensor or increase closing force to overcome a sticking door. Stop operation when the door is damaged or unsafe.

Documented specifications

Values apply to the configuration named in each row. Follow the source for its exact scope.
Motor1/2 HP ACSource: Linear LSO50 product literature · Page 1
Drive optionsBelt or chainSource: Linear LSO50 product literature · Page 1
Courtesy lightsTwo, 100 W maximum eachSource: Linear LSO50 product literature · Pages 1–2

Official documents & support

These links open the manufacturer’s document or support page. Manuals are hosted by their issuer.

Filter the documents listed below by model or document type. A match is not confirmation of your unit’s revision or installed accessories; read the scope note before using a document.

2 of 2 listed documents shown.

  • owner manual

    The official index lists this homeowner manual for LSO50 and the two named kit identifiers. Pages 1–2 were reviewed for document identity and indicator meanings; this does not verify package contents or later hardware changes.

    Models: LSO50, LSO50-2T1KB, LSO50-2T1KB8enDocument: 223712 B (printed identifier; copyright 2010)United States
  • datasheet

    Base opener literature; does not resolve kit contents.

    Models: LSO50enDocument: P/N 222748FUnited States

Parts & related references

Match the exact model and source conditions before choosing a part. Conditional statements and explicit exclusions do not confirm a fit. Open a row for its exact pairing and source.

  • AP HAE00001: Wall Station

    AP HAE00001 is the supplier wall-station listing. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    Exact pairing & sources for AP HAE00001 · Conditional

    Denco states that AP HAE00001 applies to LSO50 in the cited scope. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    From Denco catalog AP HAE00001 to LSO50

    Applies only within this source scope
    • Market: US
    • Model scope: LSO50
    • Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.
    • The three operator labels are explicit; wiring protocol and revision are not given.
    • Source 1: DencoDenco supplier reference: AP HAE00001 · h1; span.sku; Description bullet1: operator list · checked 2026-09-12

  • AP HAE00040: Control Board

    Denco identifies AP HAE00040 as a replacement control-board listing. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    Exact pairing & sources for AP HAE00040 · Conditional

    Denco states that AP HAE00040 applies to LSO50 in the cited scope. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    From Denco catalog AP HAE00040 to LSO50

    Applies only within this source scope
    • Market: US
    • Model scope: LSO50
    • Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.
    • The supplier names three operators but gives no board revision or programming state.
    • Source 1: DencoDenco supplier reference: AP HAE00040 · h1; span.sku; Description item1: three named operator models · checked 2026-09-12

  • AP 218189-01: Trolley Assembly

    AP 218189-01 is a replacement trolley listing. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    Exact pairing & sources for AP 218189-01 · Conditional

    Denco states that AP 218189-01 applies to LSO50 in the cited scope. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    From Denco catalog AP 218189-01 to LSO50

    Applies only within this source scope
    • Market: US
    • Model scope: LSO50
    • Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.
    • The three operator labels are explicit; rail revision and kit contents are not given.
    • Source 1: DencoDenco supplier reference: AP 218189-01 · h1; span.sku; Description bullet1: exact operator list · checked 2026-09-12

  • LINO HAE00047: Helical & Worm Gears

    Denco lists LINO HAE00047 as a helical and worm gear replacement kit. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    Exact pairing & sources for LINO HAE00047 · Conditional

    Denco states that LINO HAE00047 applies to LSO50 in the cited scope. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    From Denco catalog LINO HAE00047 to LSO50

    Applies only within this source scope
    • Market: US
    • Model scope: LSO50
    • Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.
    • The kit is listed for three operators. Component quantities, gear tooth counts and replaced part numbers are not stated.
    • Source 1: DencoDenco supplier reference: LINO HAE00047 · h1; span.sku; Description: replacement gear-kit model list · checked 2026-09-12

  • AP HAE00004: Limit Switch Assembly

    Denco identifies AP HAE00004 as a replacement limit-switch assembly. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    Exact pairing & sources for AP HAE00004 · Conditional

    Denco states that AP HAE00004 applies to LSO50 in the cited scope. Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.

    From Denco catalog AP HAE00004 to LSO50

    Applies only within this source scope
    • Market: US
    • Model scope: LSO50
    • Denco supplier assertion for the US reference catalog; confirm the installed equipment and applicable revision. This is not manufacturer engineering verification.
    • The exact three operators are named; electrical ratings and installed revision still require confirmation.
    • Source 1: DencoDenco supplier reference: AP HAE00004 · h1; span.sku; Description bullet1: exact operator list · checked 2026-09-12
Shared scope and cautions for the following 10 references
Applies only within this source scope
  • Market: US
  • Model scope: LSO50
  • comparison-function: MegaCode radio control

  • Linear ACT-31B key-ring radio control

    ACT-31B is a MegaCode key-ring control with one physical button and factory coding. No proximity-tag function is established in this reference. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-31B · Conditional

    ACT-31B is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-31B to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-31C key-ring radio control

    ACT-31C is a MegaCode key-ring control with one physical button and custom coding. No proximity-tag function is established in this reference. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-31C · Conditional

    ACT-31C is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-31C to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-31D key-ring radio control

    ACT-31D is a MegaCode key-ring control with one physical button and factory coding. It also has a Linear-format proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-31D · Conditional

    ACT-31D is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-31D to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-31DH key-ring radio control

    ACT-31DH is a MegaCode key-ring control with one physical button and factory coding. It also has an HID-compatible proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-31DH · Conditional

    ACT-31DH is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-31DH to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-31DHC key-ring radio control

    ACT-31DHC is a MegaCode key-ring control with one physical button and custom coding. It also has an HID-compatible proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-31DHC · Conditional

    ACT-31DHC is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-31DHC to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-34B key-ring radio control

    ACT-34B is a MegaCode key-ring control with four physical buttons and factory coding. No proximity-tag function is established in this reference. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-34B · Conditional

    ACT-34B is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-34B to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-34C key-ring radio control

    ACT-34C is a MegaCode key-ring control with four physical buttons and custom coding. No proximity-tag function is established in this reference. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-34C · Conditional

    ACT-34C is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-34C to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-34D key-ring radio control

    ACT-34D is a MegaCode key-ring control with four physical buttons and factory coding. It also has a Linear-format proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-34D · Conditional

    ACT-34D is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-34D to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-34DH key-ring radio control

    ACT-34DH is a MegaCode key-ring control with four physical buttons and factory coding. It also has an HID-compatible proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-34DH · Conditional

    ACT-34DH is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-34DH to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

  • Linear ACT-34DHC key-ring radio control

    ACT-34DHC is a MegaCode key-ring control with four physical buttons and custom coding. It also has an HID-compatible proximity tag. The listed operator and receiver pairings cover radio control only; retain the exact variant and code-enrollment requirements.

    Read the shared scope and cautions above

    Exact pairing & sources for ACT-34DHC · Conditional

    ACT-34DHC is documented for LSO50 in MegaCode radio-control use. MegaCode radio transmitter function only. The chart's proximity-reader entries and bold formatting do not establish proximity-reader functionality in these garage operators. Enroll the transmitter code using the exact equipment instructions; custom and factory coding configurations remain distinct. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

    From ACT-34DHC to LSO50

    • Source 1: Linear LLCACT transmitter and TRANS PROX compatibility chart · Page 4, Products Compatible with Transmitters and TRANS PROX, Garage Door Operators cell (five exact rows) and Gate Receivers cell (MDR/U row) · checked 2026-09-11 · 232495 B

Before applying these details

  • LSO50-2T1KB and LSO50-2T1KB8 remain distinct kit identifiers. Kit contents, rail length and package differences have not been verified. Shared manual links do not resolve those questions.
  • These are historical manufacturer documents. Their presence does not establish current sale, stock, warranty entitlement or compatibility with replacement controls.
  • Exact contents and rail configurations of LSO50-2T1KB and LSO50-2T1KB8 remain unverified.

Sources & scope

  1. Nice/Linear product manualsNice/Linear · checked 2026-09-11
  2. Linear LSO50 product literatureNice/Linear · checked 2026-09-11 · P/N 222748F
  3. Linear LSO50 homeowner instructionsNice/Linear · checked 2026-09-11 · 223712 B (printed identifier; copyright 2010)

Anderson prepared this independent reference from the listed sources. It is not the manufacturer’s official support site, an installation inspection or a product test. Current stock, parts availability and warranty entitlement are not established by a listing.

Describe the symptom

Troubleshooting guides explain observations; they do not identify a failed part from a model number.

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