LiftMaster 378LM Wireless Secondary Control Panel
The LiftMaster 378LM is a wireless secondary wall control panel designed for compatible Security+ 315 MHz garage door openers. It allows opener control from an additional wall location without running new control wire.
This control is commonly associated with LiftMaster openers using a purple learn button or purple antenna wire. It can be a practical choice for secondary garage entrances, work areas, or installations where a wired wall station is difficult to add.
Common Use and Compatibility
The 378LM is intended for select LiftMaster Security+ 315 MHz garage door openers. Compatibility is based on radio technology and learn button color, not just the LiftMaster name.
- Select LiftMaster Security+ 315 MHz garage door openers
- Commonly associated with purple learn button or purple antenna wire systems
- Commonly referenced with select 3255, 3265, 3280, 3575, 3585, 3595, 3800, and 3850 model families when confirmed
- May be associated with select Raynor 315 MHz Security+ opener families when confirmed
- Not for yellow learn button Security+ 2.0 openers
Also Known As / Related Part Numbers
- 378LM
- 41A6345-1
- Wireless secondary control panel
- Security+ 315 MHz wall control
- Purple learn button wireless wall control
Technician Note
The 378LM is a wireless control and must be programmed like a compatible remote. If the opener has a yellow learn button, Wi-Fi built in, or Security+ 2.0 accessories, this is usually not the correct wall control.
Before Ordering, Confirm
- The opener uses Security+ 315 MHz technology
- The learn button or antenna color is purple
- The application needs a wireless secondary control location
- The opener is not a Security+ 2.0 yellow learn button model
- The primary wall control remains installed if required by the opener
Professional Advisory
Program and test the control with the garage door in clear view. Do not use a wireless wall control to operate a door with broken springs, damaged hardware, failed photo eyes, or unsafe travel movement.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain Group |
| Product Type | Wireless Secondary Control Panel |
| Part Number | 378LM |
| Application | Wireless wall control for compatible garage door openers |
| Compatible Operator Type | Select Security+ 315 MHz residential garage door openers |
| Learn Button / Radio Type | Purple learn button / 315 MHz Security+ |
| Control Capacity | Up to two compatible openers |
| Notes | Not compatible with Security+ 2.0 yellow learn button openers. |
Questions & Answers
What is the LiftMaster 378LM used for?
The LiftMaster 378LM is a wireless secondary wall control used to operate compatible Security+ 315 MHz garage door openers without running wall control wire.
Which learn button color is commonly associated with the 378LM?
The 378LM is commonly associated with LiftMaster Security+ 315 MHz systems using a purple learn button or purple antenna wire.
Can the 378LM control more than one opener?
Yes. The 378LM can be programmed to operate up to two compatible garage door openers when each opener supports the correct 315 MHz Security+ technology.
Does the 378LM replace a wired wall control?
The 378LM is normally used as a wireless secondary control, not as the required primary wired wall control on openers that need a hardwired station.
Will the 378LM work with yellow learn button openers?
No. The 378LM should not be used for Security+ 2.0 yellow learn button openers. Those systems require a different compatible control or remote technology.
