LiftMaster K1D8247 Hall-Effect Sensor Board — CSW200U / CSW200UL

The LiftMaster K1D8247 is the Hall-effect sensor board identified in documented CSW200U and CSW200UL swing-gate operator service information. It belongs to the operator’s internal feedback arrangement and is separate from the main logic board, power board and external entrapment sensors. Match the full model and installed revision before ordering. A feedback-related symptom can originate in the board, wiring or drive movement, so the repair should follow diagnosis of the complete sensing path rather than replacement based on a fault indication alone.

Compatibility — Models, Versions and Exclusions

Diagnose Feedback and Mechanical Movement Together

A feedback fault can occur when the sensing circuit, its connection or the associated mechanism does not operate correctly. Have the technician inspect these together and preserve diagnostic information. A stalled motor or binding gate can prevent expected movement even if the sensor itself remains serviceable. Replacing electronics does not repair that mechanical cause.

Photograph the installed board and its connections before service. Compare the actual assembly with the appropriate CSW200 drawing, especially if previous repairs changed the control system. Restore the manufacturer’s mounting, sensing arrangement and wire routing without bypassing feedback. After replacement, complete the prescribed setup and full-cycle tests with every required protection device operational.

Specifications and Product Identification

Before Ordering

• Read the complete CSW200 model and board reference.
• Confirm K1D8247 in the applicable repair drawing.
• Inspect feedback connections and actual drive movement.
• Confirm supplied installation pieces and required operating tests.

Package Contents and Separate Requirements

This offer identifies the Hall-effect sensor board. A main control board, power board, motor, complete harness, mechanical limit assembly and external protection devices are not promised as included. Verify the current carton for board-specific mounting or connection pieces. Components shown elsewhere in the electrical diagram remain separate service items unless the supplier expressly includes them in this package.

Safety Warnings — Read Before Installation or Service

• WARNING: Gate drives contain hazardous electrical energy and exposed moving parts. Feedback-sensor service requires a qualified gate technician.
• Isolate all applicable power and secure the gate before accessing the sensor or control enclosure.
• Never bypass feedback, limits or protection inputs to force a faulty operator to run. Correct the underlying problem.
• Restore guards and verify travel, reversal and every required protection device before returning the entrance to normal use.

Related Products and Important Differences

• 041C4398A residential RPM sensor — a different application; not a substitute for this SL3000 encoder board.
• LMRRUL monitored photo eye — external protection where approved; it does not replace internal motion feedback.

Frequently Asked Questions

Is it the main control board?

No. It is the Hall-effect sensor-board service item.

Can I substitute the SL3000 encoder board?

No interchangeable fit is established.

Does it replace external safety sensors?

No. Internal feedback and external protection have different roles.

Will it fix a stalled motor?

Not by itself. The motor, wiring and mechanical load need diagnosis.

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.