LiftMaster K001A5747 315MHz Receiver Module — Legacy LA400

The LiftMaster K001A5747 is the 315MHz receiver module identified in the legacy LA400/LA400S control-box repair list. It receives compatible radio commands for the specified control arrangement. The same manual identifies K001A5747-2 as a separate 390MHz version, making the complete suffix and installed radio system essential when choosing a replacement. Select the replacement by the complete part number and the installed equipment configuration. A similar photograph or a shared LiftMaster brand name does not establish interchangeability. Confirm the applicable service drawing before ordering so the repair addresses the correct component and its related mounting, connection and operating requirements.

Compatibility — Models, Versions and Exclusions

Identify the Assembly and Plan the Repair

Record the existing module number, controller and transmitter information before ordering. The LA400 family spans several generations, and an enclosure label without the control revision can be insufficient. A main control-board failure, damaged antenna or enrollment issue should not be mistaken for a failed radio module.

After service, use the exact receiver and operator instructions to enroll authorized transmitters and verify operation. A replacement receiver does not automatically copy the existing user list or provide access-management service. It also does not add Wi-Fi, myQ connectivity or a newer radio protocol merely by replacing the legacy module.

An electrical symptom does not identify the failed component by itself. Have qualified service personnel inspect the supply, wiring, connections and equipment condition before replacing parts. Record existing labels and terminal references with power safely isolated. A replacement should restore the documented circuit arrangement; it should not be used to change operating voltage, defeat a protective function or compensate for a mechanical load that the equipment cannot safely move.

Compare the delivered item with the approved service reference before installation. The installer must obtain the equipment-specific wiring, mounting and commissioning instructions rather than infer them from the appearance of the part. Keep conductors clear of moving components and reinstall the intended covers. After the repair, check the original complaint and the equipment’s required operating and safety functions; a successful power-up alone is not a complete service test.

Specifications and Product Identification

Before Ordering

• Confirm K001A5747 without the -2 suffix.
• Verify315MHz and supported transmitter coding.
• Identify the control-box generation and antenna.
• Plan authorized enrollment and supervised testing.

Package Contents and Separate Requirements

The listing identifies the receiver module. Main control board, antenna, remotes, batteries and complete operator are separate unless explicitly included. Confirm the current module and any connection pieces. A diagram of a complete control box does not promise that neighboring electronics or replacement transmitters are supplied with this order.

Safety Warnings — Read Before Installation or Service

• WARNING: Electrical service can expose hazardous voltage and moving equipment. Use qualified service personnel and electrical personnel where required.
• Disconnect every applicable mains, battery and auxiliary supply before work. Follow the equipment instructions for stored energy and safe isolation.
• Keep transmitters away from children and test receiver commands only with the gate visible and clear. Radio enrollment does not replace entrapment protection.
• Restore covers and wiring protection, then complete the model-specific functional and safety checks before returning the installation to normal use.

Related Products and Important Differences

• CPS-U monitored photo eyes — separate protection devices for approved commercial-door controls; match the operator and environment.
• TDC12X1BMC MAXUM trolley operator — a complete-operator comparison, not evidence that this legacy service part fits MAXUM.

Frequently Asked Questions

Is this the 390MHz module?

No. The cited manual separately lists K001A5747-2 for 390MHz.

Will every 315MHz remote work?

No. Compatible coding and receiver technology must also match.

Does it include the main control board?

No. The module and main board are separate components.

Does it add app control?

No such capability is established for this receiver replacement.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.