LiftMaster / Accessory reference
LiftMaster 850LM
LiftMaster 850LM: Three receiver channels have stated capacities of 50, 20 and 20 remotes. Inputs are 12–24 VDC or 12–24 VAC; outputs comprise one Form C and two Form A relays.
Match the whole number.
Manufacturer identifier: 850LM. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.
- Denco supplier reference: RC 850LMh1; span.sku; Description channel, power, relay, radio and operating/storage specifications; Description explicit811LM/813LM and MAX compatibility bullet · checked 2026-09-12 · Denco
| Supplier-stated detail | Three receiver channels have stated capacities of 50, 20 and 20 remotes. Inputs are 12–24 VDC or 12–24 VAC; outputs comprise one Form C and two Form A relays.
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| Supplier-stated detail | Lists narrow-band Security+ 2.0 at 310/315/390 MHz, operating temperatures from −35 to 65°C, and separate storage limits from −40 to 85°C.
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| Supplier-stated detail | The supplier names 811LM, 813LM and the MAX remote-control family.
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| Selection limitation | Channel capacities do not prove 90 distinct enrolled remotes. Relay current ratings and channel-to-relay assignment are unspecified; LM identifiers are not LMX aliases and exact MAX membership needs evidence.
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Documented fitment & exclusions
Read the exact equipment or component, market, production and variant limits in every row. An omitted pairing has not been verified by this reference.
A component pairing applies only to the listed items and source conditions. It does not establish suitability for an installed opener or compatibility through another component.
| Equipment or component / relationship | Evidence and conditions |
|---|---|
| Denco catalog RC PPLK1-10 Documented compatibility From Denco catalog RC PPLK1-10 to 850LM. | Denco names RC PPLK1-10 in the stated application with 850LM. The supplier explicitly excludes direct compatibility with LiftMaster garage-door openers. The external receiver pairing does not remove that exclusion or prove a downstream installation. Applies only within this source scope
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| 811LM Documented compatibility From 850LM to 811LM. | Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed
Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 850LM in the stated application with 811LM. The source names 811LM and 813LM. It does not identify 811LMX or 813LMX as interchangeable, and receiver pairing does not establish installed-opener fitment. Applies only within this source scope
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| 813LM Documented compatibility From 850LM to 813LM. | Conditional Additional source conditions or an adapter must be checked before confirming compatibility. Details still needed
Use the exact label and the source scope below. An unanswered condition keeps this result conditional or unverified. Denco names 850LM in the stated application with 813LM. The source names 811LM and 813LM. It does not identify 811LMX or 813LMX as interchangeable, and receiver pairing does not establish installed-opener fitment. Applies only within this source scope
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Direct replacement paths
No direct successor for 850LM is verified in this reference.
A direct replacement statement does not establish reverse interchangeability, a kit equivalent or a later replacement chain.
Compare exact equipment or a component.
Check a part or accessory pairing
Recall references
No recall reference is included for this identifier in the published dataset. This is not a safety clearance or proof that no recall exists.
Sources & scope
- Denco supplier reference: RC 850LMDenco · US · checked 2026-09-12
- Denco supplier reference: RC PPLK1-10Denco · US · checked 2026-09-12
Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.
This is an independent Anderson reference. Manufacturer names identify the equipment and do not imply affiliation or authorized-dealer status. Anderson provides repair service in its listed Connecticut communities.
A reference listing does not establish current stock, a price, eligibility for manufacturer support or that a component is faulty.