LiftMaster MA001 / K79-60166 Control Board for Compatible Mega Arm Barrier Operators

The LiftMaster MA001 is a replacement control board for compatible Mega Arm and Mega Arm Tower barrier-gate systems. The supplier maps MA001 to manufacturer part number K79-60166. This is the controller service component, intended for a diagnosed electronics fault in the correct operator configuration. Confirm the full barrier-operator model, board label and installed options before ordering; a shared Mega Arm name does not by itself identify every revision or special operating configuration.

Compatibility — Models, Versions and Exclusions

Check the Complete Barrier System Before Replacing Electronics

An unresponsive barrier can have several causes. Supply or battery problems, a damaged input circuit, a detector issue or a mechanical fault may produce symptoms that look like a controller failure. A technician should establish the cause before replacing this board. Record diagnostic behavior without moving people or vehicles into the arm’s operating area.

Barrier installations often combine access credentials, vehicle detection, timers and external control equipment. Their intended behavior needs to be understood before a board is changed. Photograph readable equipment labels and the existing connection arrangement, and identify any special options. Do not assume programming, detector settings or operating modes transfer automatically to a replacement controller.

Specifications and Product Identification

Before Ordering

• Supply the operator model, manufacture information and complete existing board reference.
• Identify any Sprint, trap, paired-operator or other special configuration.
• Have power, batteries, field inputs and the mechanical drive checked during diagnosis.
• Confirm the replacement procedure and all settings that must be re-established.

Package Contents and Separate Requirements

This listing identifies the controller board. The barrier arm, cabinet, batteries, motor, detector loops and access-control devices are not represented as included. Check the service-kit inventory for connectors or option components before purchase; parts shown beside the board in an operator diagram are not automatically part of this offer.

Safety Warnings — Read Before Installation or Service

• WARNING: A descending or unexpectedly moving barrier arm can strike a person or vehicle and cause serious injury. Use a trained gate-systems technician for service.
• Isolate incoming power and backup batteries as applicable, and secure the lane and arm before electrical or mechanical work.
• Keep pedestrians out of the vehicle lane and away from the moving arm. A vehicle detector does not establish pedestrian protection.
• Do not return the lane to normal use until control inputs, arm operation and required protective functions have been tested for the actual installation.

Related Products and Important Differences

• KPW250 wireless commercial keypad — an access-control comparison for systems with an approved compatible receiver; it is not a direct MA001 board accessory or a safety detector.
• LMRRUL monitored photo eye — a separate safety-product comparison. Compatibility with a legacy barrier must be established from that barrier’s approved device list, not inferred from this link.

Frequently Asked Questions

Why are MA001 and K79-60166 both listed?

MA001 is the supplier item reference, and its catalog records K79-60166 as the manufacturer part number.

Will this fit every Mega-branded operator?

No universal fit is claimed. Verify the exact barrier model, board reference and options.

Does this include new vehicle detectors?

No detector package is represented by this controller listing. Confirm any required detector replacement separately.

Can a board change fix a damaged arm or drive?

Mechanical damage requires its own repair. Electronics should be replaced only when diagnosis supports that decision.

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.