LiftMaster 373LM 4-pack 3-Button Security+ 315 MHz Remote Control
The LiftMaster 373LM 4-pack 3-Button Security+ 315 MHz Remote Control is a multi-pack of LiftMaster 373LM three-button Security+ 315 MHz remote controls for compatible older LiftMaster-family systems with a purple learn button. It is commonly used on openers and receivers from the Security+ 315 MHz generation.
Each 373LM remote can control up to three compatible devices, making this pack useful when multiple drivers need remotes for the same older garage door system or when a site has several compatible 315 MHz operators. It is often associated with LiftMaster, Chamberlain, Sears Craftsman, Raynor, AccessMaster, and other Chamberlain Group private-label openers using the purple learn button.
The 373LM should not be confused with yellow learn button Security+ 2.0 remotes such as 893LM, or with red/orange 390 MHz remotes. For this remote, the important checks are purple learn button, Security+ 315 MHz technology, and a compatible receiver or operator.
What This Remote Does
The remote sends a wireless command to a compatible opener, gate operator, receiver, or accessory. Depending on the remote style, each button can be programmed to a separate compatible device or channel.
Replacement remotes are commonly needed when original transmitters are lost, worn, damaged, or when a property needs additional access for family members, employees, tenants, or service vehicles. Correct programming depends on the learn button color, receiver model, and radio technology used by the existing equipment.
Compatible With
Compatibility is based on the receiver or operator radio technology, not only the brand printed on the remote. The following applications are commonly associated with this remote family when the opener, receiver, or accessory uses the correct learn button, frequency, security type, and programming method.
Common Compatible Products and Systems
- Select LiftMaster garage door openers with purple learn button
- Select Chamberlain, Craftsman, Sears, Raynor, AccessMaster, and related private-label Chamberlain Group openers using Security+ 315 MHz purple learn button technology
- Select LiftMaster Security+ 315 MHz gate operators
- Select LiftMaster Security+ 315 MHz commercial door operators
- Select 315 MHz receivers and accessories that accept 371LM, 372LM, or 373LM-style Security+ programming
- Commonly associated with many 2006-2014 era purple learn button installations
Important Compatibility Notes
- Not compatible with yellow Security+ 2.0 systems unless a compatible 315 MHz receiver is installed.
- Not compatible with red/orange 390 MHz or green Billion Code openers by itself.
- Purple learn button and 315 MHz Security+ radio technology are the key compatibility checks.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | 4-pack 3-button Security+ 315 MHz remote controls |
| Part Number | 373LM |
| Application | Remote control for older compatible purple learn button systems |
| Button Count | 3 buttons per remote |
| Frequency | 315 MHz |
| Security Technology | Security+ 315 MHz |
| Learn Button | Purple learn button on compatible openers and receivers |
| Compatible Operator Type | Select garage door openers, gate operators, commercial door operators, and receivers |
| Notes | Not for yellow Security+ 2.0, red/orange 390 MHz, green Billion Code, or DIP-switch systems by itself. |
Also Known As / Related Part Numbers
The following numbers and search terms are commonly related to this remote family. Some are alternate packaging, related remote families, or older technologies rather than exact one-for-one replacements. Match the receiver and programming method before treating any related number as interchangeable.
- 373LM
- G373LM
- 371LM
- 372LM
- 370LM
- 371LMC
- 372LMC
- 373LMC
- 41A6127-1
- 950D
- 953D
- 956D
- 950CD
- 953CD
- 956CD
- 139.18191
- 139.18192
- 139.53752
- 139.53753
- 139.53754
- Security+ 315 MHz remote
- Purple learn button remote
Technician Note
Confirm the purple learn button and 315 MHz Security+ radio family before issuing multiple remotes. If the opener has been upgraded with a newer receiver, program the remote to the receiver that is actually controlling the operator, not to the original opener label.
Before Ordering, Confirm
- The opener, gate operator, commercial operator, receiver, or accessory uses a compatible LiftMaster/Chamberlain Group radio technology.
- The learn button color, frequency, or DIP mode matches the remote being ordered.
- The number of remotes in the pack matches the quantity needed for the site.
- Each access point has an accessible learn/programming button or receiver programming method.
- The system does not require a managed access credential, proprietary community remote, or different manufacturer receiver.
- Any older remote being replaced uses the same technology or can be learned/cloned by this remote family.
Professional Advisory
Program and test each remote from a safe location with the door or gate in full view. A remote control should never be used to operate a door or gate with unsafe movement, missing safety devices, damaged hardware, or known entrapment hazards. For commercial door or gate systems, safety devices and monitored entrapment protection should be maintained according to the operator requirements.
Important Ordering Warnings
- Remote compatibility is not confirmed by brand name alone.
- Do not mix Security+ 2.0, Security+ 315 MHz, Security+ 390 MHz, Billion Code, and DIP-switch systems without confirming the correct remote technology.
- Residential garage door remotes and commercial DIP remotes are not always interchangeable.
- Community receivers may be locked, managed, or programmed by the property manager or access-control provider.
- If an opener has no working remotes and the learn button is damaged or inaccessible, additional troubleshooting may be required before programming.
Questions & Answers
What systems does the 373LM 4-pack-pack fit?
This 4-pack-pack is for compatible LiftMaster-family Security+ 315 MHz systems with a purple learn button.
Is the 373LM a 315 MHz remote?
Yes. The LiftMaster 373LM is a Security+ 315 MHz three-button remote commonly associated with purple learn button openers and receivers.
Can the 373LM replace a 371LM?
It may be used in many compatible 371LM-style Security+ 315 MHz applications, but the opener or receiver must use the same purple learn button 315 MHz technology.
Will the 373LM work with yellow learn button openers?
No. Yellow learn button openers use Security+ 2.0 technology and usually require remotes such as 891LM, 893LM, 893MAX, or another compatible Security+ 2.0 remote.
Can one 373LM remote run three operators?
Yes. Each 373LM has three buttons and can be programmed to up to three compatible Security+ 315 MHz openers, gate operators, commercial door operators, or receiver channels.
