Brands we service & repair

LiftMaster, Chamberlain, Genie, Wayne Dalton, Clopay, and Amarr.

LiftMaster / Accessory reference

LiftMaster 312HM

LiftMaster 312HM: 315 MHz coaxial receiver: high-security mode supports up to 15 Security+ remotes.

Match the whole number.

Manufacturer identifier: 312HM. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detail315 MHz coaxial receiver: high-security mode supports up to 15 Security+ remotes.
View source and citation details
Supplier-stated detailNormal-security mode separately supports up to 31 remotes described broadly as any type at 315 MHz.
View source and citation details
Selection limitationThese are alternative mode capacities, not a combined capacity of 46. Exact remote models, receiver power and relay ratings are not supplied.
View source and citation details

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.

Source statements and their exact conditions. Read the documented direction and conditions for each pairing.
Equipment or component / relationshipEvidence and conditions
86LM

Documented compatibility

From 86LM to 312HM.

Conditional

Denco names 86LM in the stated application with 312HM. The kit includes an antenna bracket and 15 ft cable. Cable length is not a radio-range claim.

Applies only within this source scope
  • Market: US
  • connection-purpose: Remote antenna mounting using the 86LM kit.
  • Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test.
  • The kit includes an antenna bracket and 15 ft cable. Cable length is not a radio-range claim.

Direct replacement paths

No direct successor for 312HM is verified in this reference.

A direct replacement statement does not establish reverse interchangeability, a kit equivalent or a later replacement chain.

The listed pairing applies in the direction shown above. Open the listed component’s reference to check its pairing with this item. You can also look up another part or accessory. A missing pairing does not establish incompatibility.

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

  1. Denco supplier reference: RC 312HMDenco · US · checked 2026-09-12
  2. Denco supplier reference: RC 86LMDenco · 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.

A reference listing does not establish current stock, a price, eligibility for manufacturer support or that a component is faulty.

One Request. Three Simple Steps.

Let’s start with your door.

No need to leave this page. You can change your answers at any step.

  1. 1 The problem
  2. 2 Your location
  3. 3 Contact details

Your request is sent to Anderson. Appointment timing and any visit charge are confirmed with you.

What do you need help with?

Selected service: Opener repair. You can change this. Reason: Reference: LiftMaster 312HM.

If the door is crooked or partly open, keep clear. Do not adjust springs or cables yourself.

From our customers

What customers say on Google

G5.0★★★★★9 reviews
6 written Google reviews

Mama Bear

3 weeks ago

G
★★★★★
The service was fantastic- courteous, knowledgeable and honest.
Excerpt from Google review

Yehuda Robinov

a month ago

G
★★★★★
Very very professional guys good jobs good service

adam ricker

3 months ago

G
★★★★★
Great worker

David Avitan

3 months ago

G
★★★★★
They replaced three garage door motors for me, and the service was excellent from start to finish.
Excerpt from Google review

Mary larson

4 months ago

G
★★★★★
Very good service and very polite

Tippawan Markmaitree-Babin

4 months ago

G
★★★★★
Very good work, polite and flexible in scheduling appointments.

Reviews from Google. Rating and relative dates checked October 1, 2026. This is a dated snapshot, not a live feed.

Serving your home with pride

Check service availability in your area.

Call now to discuss the problem and check availability for your ZIP. The exact service address is confirmed before scheduling.

Call (203) 902-3902