The LiftMaster K40-38471 is a replacement UL warning sign used on select LiftMaster commercial gate and commercial door operator installations. It is commonly described as a reversible English/Spanish warning sign so important safety information can be displayed clearly at the equipment location. This is a signage component, not an electronic safety sensor or control device.
Product Details
This sign is used when a compliant warning placard is missing, damaged, faded, or being updated during service. It is especially useful on commercial gate and overhead-style operator sites where pedestrians, drivers, maintenance staff, or building users need visible warning information. It should be installed where it can be seen before a person enters the hazardous moving equipment area.
Compatible With
This part is commonly associated with the following LiftMaster applications when the operator parts diagram calls for this exact service part:
- Various LiftMaster commercial gate operator installations requiring UL warning signage
- Various LiftMaster commercial door operator installations requiring UL warning signage
- Overhead gate and commercial door applications where K40-38471 is specified
- Sites needing reversible English/Spanish warning display
- Not a replacement for monitored entrapment protection devices, control stations, or operator logic components
Features and Specifications
| Manufacturer | LiftMaster |
| Product Type | UL warning sign |
| Part Number | K40-38471 |
| Application | Commercial gate and commercial door operator warning signage |
| Language | Reversible English / Spanish references |
| Compatible Operator Type | Select LiftMaster commercial gate and door operator installations |
| Safety Monitoring | Not monitored - warning sign only |
| Notes | Use with required safety devices and proper installation practices |
Also Known As / Related Part Numbers
- K40-38471
- 40-38471
- K4038471
- 4038471
- LiftMaster UL warning sign
- LiftMaster commercial gate warning sign
- LiftMaster commercial door warning sign
- English Spanish warning sign
Technician Note
This sign helps satisfy the visible-warning portion of a safe installation, but it is not enough by itself. The operator must still have the correct monitored entrapment protection devices and safe installation layout.
Before Ordering Checklist
- Confirm K40-38471 is the warning sign style needed for the site
- Check whether English, Spanish, or reversible display is required
- Install in plain view according to the operator manual
- Replace any missing or unreadable warning placards
- Verify all safety sensors and warning labels during annual maintenance
Professional Advisory
Commercial gate and door equipment can injure people if improperly protected. A qualified technician should verify safety devices, warning signs, controls, and operator setup after any safety-related repair.
Product Questions and Answers
What is K40-38471 used for?
It is a LiftMaster UL warning sign used on select commercial gate and commercial door operator installations.
Is this sign reversible?
Current listings commonly describe K40-38471 as reversible for English or Spanish display.
Does a warning sign make the gate code compliant by itself?
No. Warning signs are only one part of the installation. Required monitored safety devices and proper setup must also be in place.
Can it be used on commercial door operators?
Yes, K40-38471 is commonly listed for various LiftMaster commercial gate and commercial door operators.
Should both sides of a gate have warning signs?
Many gate installations require visible warning from both approaches. Follow the operator manual and local code requirements.
