LiftMaster LMEOLRES-2-2 Fire-Door End-of-Line Resistor — 2.2 kΩ
LiftMaster LMEOLRES-2-2 Fire-Door End-of-Line Resistor — 2.2 kΩ
The LiftMaster LMEOLRES-2-2 is a 2.2 kΩ end-of-line resistor identified for the applicable fire-door control or releasing-device supervision circuit. Its resistance is 2,200 ohms, not 2.2 ohms. Select it only where the exact controller wiring instructions specify that value and function; it is not a general-purpose way to bypass an open circuit or simulate a healthy protection device. 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
| Model or selection point | Compatibility requirement |
|---|---|
| LM21AFCB documentation | Check the specified supervised circuit and applicable resistor reference. |
| Circuit location | Install only at the location required by the approved wiring diagram. |
| Other resistance values | A different EOL resistance is not an equivalent selection. |
| Faulted supervision wiring | Repair the fault; do not use a resistor to disguise missing or failed field devices. |
Identify the Assembly and Plan the Repair
An end-of-line resistor forms part of a supervised circuit arrangement. Its value and location matter to how the controller recognizes the field wiring. A resistor fitted in the wrong place can conceal a wiring problem rather than restore the intended supervision. Have the fire-door service provider identify the exact circuit, controller revision and documented termination before selecting the part.
A fire-door installation must retain its required release, alarm, supervision and closing functions after service. The resistor is only one component of that system. This listing does not establish approval for every releasing device or substitute for the installation’s required inspection and functional tests. Preserve the documented wiring and arrange service through personnel qualified for the installed fire-door system.
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.
Specifications and Product Identification
| Specification | Details |
|---|---|
| Ordering reference | LMEOLRES-2-2 |
| Resistance | 2.2 kΩ / 2,200 ohms |
| Function | End-of-line circuit supervision component |
| Application reference | Applicable fire-door / releasing-device documentation |
| Other ratings | Verify tolerance, wattage and physical arrangement from the approved service specification |
Before Ordering
- Confirm the controller model and supervised circuit.
- Verify the specified value is 2.2 kΩ, not another EOL rating.
- Obtain the approved wiring and resistor-location instructions.
- Plan the required fire-door and supervision tests after service.
Package Contents and Separate Requirements
This offer identifies the 2.2 kΩ end-of-line resistor. It is not a complete fire-door controller, release mechanism, alarm interface or field-wiring repair kit. Confirm the current resistor package and electrical ratings required by the approved service specification; no additional system components are assumed included.
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.
- Never substitute an arbitrary resistor or bridge a supervised circuit to conceal a fault. Preserve the required fire-door release and supervision functions and complete the prescribed system tests.
- 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 2.2 kΩ the same as 2.2 ohms?
No. 2.2 kΩ equals 2,200 ohms. The difference is material to the supervised circuit’s intended operation.
Can it silence a wiring fault?
Do not use a resistor to conceal a fault. Restore the complete field circuit and its documented supervision arrangement.
Will it work on every fire-door controller?
No universal fit is established. Match the exact controller, circuit and specified EOL value.
Does replacing it complete the fire-door repair?
Not by itself. Qualified personnel must verify the required supervision, release and door functions under the applicable service procedure.
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.
Details
Need Help With Compatibility?
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