The 312hm-412hm-850lm-423lm-receiver-">041A3504-1 antenna kit with adapter is used when a supported LiftMaster or Chamberlain opener or receiver needs the antenna moved to a better receiving location. In the field, this type of kit is useful when remote range is short, a receiver is mounted inside a metal enclosure, or the opener is installed where surrounding materials block the radio signal. The kit provides the antenna hardware, adapter cable, and mounting bracket needed for a cleaner remote antenna installation. It is not a radio receiver, frequency conversion kit, remote control, or logic board. Compatibility depends on the receiver or opener antenna connection and the radio technology already in the system. For receiver-based gate or commercial installations, confirm the receiver model and connector style before ordering. Poor range can also be caused by weak remote batteries, interference, damaged receivers, or incorrect remote compatibility, so those items should be checked before replacing antenna hardware.
| Manufacturer | LiftMaster |
|---|---|
| Product Type | Antenna kit with adapter |
| Part Number | 312hm-412hm-850lm-423lm-receiver-">041A3504-1 |
| Application | Remote range / antenna relocation service |
| Compatible Operator Type | Various LiftMaster and Chamberlain openers and supported receivers |
| Included Components | Antenna, adapter cable, and mounting bracket |
| Related Receiver References | 312HM, 323LM, 412HM, 422LM, 423LM, 850LM when connector style supports the kit |
| Notes | Does not change receiver frequency or security technology |
Correct fitment depends on the original part number, opener generation, and the exact hardware or electrical layout. If a similar part looks close but uses a different voltage, rail length, learn button generation, bracket shape, or connector style, it should be treated as a different part until the parts diagram confirms otherwise.
For electrical diagnosis, line-voltage repairs, motor replacement, or unsafe door movement, have the system inspected by a qualified garage door technician. Do not bypass safety devices or modify control wiring to make an incompatible part work.
No. It only helps relocate or extend the antenna. It does not convert the receiver to a different frequency or security format.
Manufacturer references list an antenna, adapter cable, and mounting bracket for supported applications.
It may help when range problems are caused by poor antenna position or signal blockage, but weak remotes, interference, or receiver failure should also be checked.
No. Do not cut, remove, or modify the existing antenna unless the manufacturer instructions for the exact model direct it.
It may be used with supported receiver installations that have the proper connector style. Verify the receiver model and connector before ordering.