LiftMaster 86LM Antenna Extension Kit, 15' Cable
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
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Key Features
- Extend receiver placement up to 15' for improved signal reliability and fewer dropouts
- L-shaped bracket with coaxial connection simplifies neat mounting on control panels
- OEM LiftMaster fit ensures compatibility with 312HM, 412HM, 423-315LM, 422LM and 850LM receivers
- Preserves antenna tuning—use existing antenna or order special K77-36541 for 850LM to avoid detuning
- Ideal for security and monitoring applications where optimal antenna location is critical
Quick Specifications
- Product Model
- 86LM
- Brand Name
- Liftmaster
- Product Name
- Mounting Extension
- Product Type
- Mounting Extension
Explore the details
Product information
86LM
Overview
Extend and reposition your LiftMaster receiver antenna to improve signal reliability and reduce dropouts at the control panel. The LiftMaster 86LM Antenna Extension Kit is a control panel accessory designed for installers who need more flexibility in antenna placement without modifying the receiver. The kit includes an L-shaped bracket with a coaxial connection and a 15' coaxial cable, giving you range to locate the antenna for optimal reception and reduced interference.
Built for professional garage door operator and security installations, the 86LM fits common LiftMaster receivers such as 312HM, 412HM, 423-315LM/323LM, 422LM and 850LM. Note: the kit does not include the brass antenna—reuse the receiver’s existing antenna or order part K77-36541 for the 850LM, as that unit requires a specially tuned bent antenna. Using the correct antenna preserves tuning and maintains reliable performance for security, surveillance and monitoring applications.
Quick to mount and discreet in black/gray, this OEM extension kit streamlines installations and improves system uptime. Order the LiftMaster 86LM today to optimize receiver placement and strengthen signal integrity on your control panels, or contact us to confirm compatibility.
Features
- Extend receiver placement up to 15' for improved signal reliability and fewer dropouts
- L-shaped bracket with coaxial connection simplifies neat mounting on control panels
- OEM LiftMaster fit ensures compatibility with 312HM, 412HM, 423-315LM, 422LM and 850LM receivers
- Preserves antenna tuning—use existing antenna or order special K77-36541 for 850LM to avoid detuning
- Ideal for security and monitoring applications where optimal antenna location is critical
| General Information | |
|---|---|
| Brand Name | Liftmaster |
| Manufacturer | The Chamberlain Group, Inc |
| Product Name | Mounting Extension |
| Product Type | Mounting Extension |
| Manufacturer Part Number | 86LM |
| Technical Information | |
| Device Supported | Antenna, Receiver |
| Application/Usage | Garage Door Operator |
| Physical Characteristics | |
| Color | Black, Gray |
| Miscellaneous | |
| Compatibility | Liftmaster Antenna 312HM 412HM 423-315LM 323LM 422LM 850LM 422HM 423LM |
| Country of Origin | CN |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- 86LM
- Manufacturer part:
- 86LM
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsLiftMaster 86LM Antenna Extension Kit, 15' Cable
86LM