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

Linear / Accessory reference

Linear MDR-2 radio receiver

MDR-2 identifies a radio receiver. The cited source supports only the exact facts and relationships shown; other equipment pairings remain unverified.

US source scopeUpdated 2026-09-11Independent Anderson reference

Match the whole number.

Manufacturer identifier: MDR-2. 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.
Component functionRadio receiver
View source and citation details
Receiver functionExternal radio receiver for operator control
View source and citation details
Channel count2 channels
View source and citation details
Output typeRelay outputs
View source and citation details
Normal supply24 VAC or VDC
View source and citation details
Transmitter memory10 transmitters per receiver
View source and citation details
Radio formatMegaCode
View source and citation details
Document associationThe official index links MDR-2 to a manual whose model row prints MDR2. This association does not create another product identity.
View source and citation details
Supply scopeThe 24 V specification is the normal receiver input. Equipment with a different supply requires the separate source-specified arrangement; no universal operator fitment is established.
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.

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. Read the documented direction and conditions for each pairing.
Equipment or component / relationshipEvidence and conditions
ACT-31B

Documented compatibility

From ACT-31B to MDR-2.

Conditional

ACT-31B is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-31C

Documented compatibility

From ACT-31C to MDR-2.

Conditional

ACT-31C is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-31D

Documented compatibility

From ACT-31D to MDR-2.

Conditional

ACT-31D is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-31DH

Documented compatibility

From ACT-31DH to MDR-2.

Conditional

ACT-31DH is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-31DHC

Documented compatibility

From ACT-31DHC to MDR-2.

Conditional

ACT-31DHC is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-34B

Documented compatibility

From ACT-34B to MDR-2.

Conditional

ACT-34B is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-34C

Documented compatibility

From ACT-34C to MDR-2.

Conditional

ACT-34C is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-34D

Documented compatibility

From ACT-34D to MDR-2.

Conditional

ACT-34D is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-34DH

Documented compatibility

From ACT-34DH to MDR-2.

Conditional

ACT-34DH is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
ACT-34DHC

Documented compatibility

From ACT-34DHC to MDR-2.

Conditional

ACT-34DHC is documented for MDR-2 in MegaCode radio-control use. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control
MDTK

Documented compatibility

From MDTK to MDR-2.

Conditional

MDTK is documented for MDR-2 in MegaCode radio-control use. Keypad enrollment into the four named radio receivers only; no downstream operator fitment. Channel two is stated for MDR-2 only. The receiver must be installed and its keypad code enrolled according to the exact equipment instructions. No downstream opener model compatibility is inferred. Code enrollment and installation follow the exact equipment instructions; this does not verify an installed system.

Applies only within this source scope
  • Market: US
  • comparison-function: MegaCode radio control

Direct replacement paths

No direct successor for MDR-2 is verified in this reference.

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

The listed pairing applies in the direction shown above. Open the listed component’s reference to check its pairing with this item. You can also look up another part or accessory. A missing pairing does not establish incompatibility.

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. ACT transmitter and TRANS PROX compatibility chartLinear LLC · US · checked 2026-09-11 · 232495 B
  2. MDTK digital keypad instructionsLinear LLC · US · checked 2026-09-11 · 208761 D
  3. Linear official manuals index, exact receiver document associationsLinear / Nice · US · checked 2026-09-11
  4. MegaCode MDR and MDR2 receiver installation referenceLinear / Nice · US · checked 2026-09-11 · 210188 B

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

Browse the model library →

Confirm a missing detail

Use Linear 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.

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.