LiftMaster 20-2LM 2-Strand Bell Wire Red/White
The LiftMaster 20-2LM is 2-strand low-voltage bell wire used for garage door opener wall control and accessory wiring. It is commonly supplied as a 500 ft roll for installer use.
The red/white and white color coding is commonly used for wall controls and push-button circuits, helping keep accessory wiring easier to identify during installation and service.
Common Use and Compatibility
The 20-2LM is a wiring accessory rather than a model-specific opener part. It is used with compatible low-voltage control circuits.
- Garage door opener wall control wiring
- Wall button and push-button control circuits
- Low-voltage accessory wiring for compatible opener systems
- LiftMaster, Chamberlain, Sears Craftsman, and Raynor control wiring applications when wire gauge and circuit requirements match
- Not for line-voltage or high-voltage power wiring
Also Known As / Related Part Numbers
- 20-2LM
- G20-2LM
- 2-strand bell wire red/white
- 22-gauge bell wire
- Wall control wire
- Control panel bell wire
Technician Note
Use the correct wire type and route it away from sharp edges, moving opener parts, and high-voltage wiring. If a wall control works intermittently, check for staples through the wire, loose terminals, corrosion, or broken conductors.
Before Ordering, Confirm
- A 500 ft roll is the correct quantity for the job
- The circuit is low-voltage wall control or accessory wiring
- 22-gauge 2-conductor bell wire is suitable for the application
- The red/white color coding matches the job preference
- Local electrical requirements do not require a different wire type
Professional Advisory
This is low-voltage bell wire and should not be used for line-voltage wiring. If wiring is routed through walls, conduit, commercial spaces, or code-controlled areas, follow applicable electrical requirements.
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain Group |
| Product Type | 2-Strand Bell Wire |
| Part Number | 20-2LM |
| Application | Low-voltage wall control and accessory wiring |
| Compatible Operator Type | Compatible low-voltage LiftMaster-family garage door opener control circuits |
| Gauge | Commonly listed as 22 AWG |
| Length | Commonly sold as a 500 ft roll |
| Color | Red/white and white |
| Notes | Use for low-voltage circuits only; not for line-voltage power. |
Questions & Answers
What is LiftMaster 20-2LM wire used for?
LiftMaster 20-2LM is 2-strand low-voltage bell wire commonly used for garage door opener wall controls and other low-voltage accessory wiring.
What color is the 20-2LM wire?
The 20-2LM is commonly identified as red/white and white 2-conductor bell wire for wall control wiring.
How long is the 20-2LM roll?
The 20-2LM is commonly sold as a 500 ft roll of 22-gauge 2-strand bell wire.
Can 20-2LM be used for photo eyes?
It may be used for low-voltage circuits, but LiftMaster commonly identifies the red/white 20-2LM for wall controls and the black/white 21-2LM for photo eye wiring.
Is this wire for high-voltage power?
No. The 20-2LM is low-voltage bell wire and should not be used for line-voltage power wiring.
