The Whelen L31HAF is a low-profile, 4-inch-tall amber Super-LED® beacon designed to provide powerful 360-degree warning coverage. Within the L31/L32 family, the L31 uses the high-dome configuration, while maintaining a shorter overall profile than many conventional warning beacons.
This 12 VDC, single-color model uses a permanent flat-mount base and provides 69 Scan-Lock™ flash patterns, including four simulated rotating patterns. Dynamic Variable Intensity™ technology, high/low intensity control, cruise-light operation, and Sync capability provide flexible warning performance for different operating conditions.
The L31HAF features a smooth, hard-coated polycarbonate dome, powder-coated cast-aluminum base, conformal-coated electronics, reverse-polarity protection, and minimal RFI/EMI radiation. Its rugged construction is designed for long service life in harsh weather and heavy-duty fleet environments.
Key Features
| Feature |
Details |
| 360-Degree Warning Coverage |
High-intensity amber warning output around the vehicle |
| Super-LED® Technology |
Durable LED warning output with controlled current draw |
| High-Dome Configuration |
Smooth dome profile designed for maximum visibility |
| Scan-Lock™ |
69 flash patterns, including four simulated rotating patterns |
| Dynamic Variable Intensity™ |
Adjusts output intensity for improved nighttime visibility |
| Warning Controls |
High/low intensity and cruise-light functionality |
| Sync Capability |
Synchronize or alternate patterns with up to eight compatible Whelen beacons |
| Permanent Flat Mount |
Fixed installation for commercial and vocational vehicles |
Specifications
| Attribute |
Details |
| Brand |
Whelen |
| Series |
L31 |
| Model |
L31HAF |
| SKU |
0011210 |
| Product Type |
Amber LED Beacon Light |
| Configuration |
Single Color |
| Light Color |
Amber |
| Dome Profile |
High Dome |
| Optics |
Super-LED® |
| Control |
SmartLED® |
| Voltage |
12 VDC |
| Current Draw |
4.0 amps peak / 1.6 amps average |
| Flash Patterns |
69 total, including four simulated rotating patterns |
| Mounting |
Permanent Flat Mount |
| Dome Material |
Hard-Coated Polycarbonate |
| Base |
Powder-Coated Cast Aluminum |
| Electronics |
Conformal Coated |
| Electrical Protection |
Reverse-Polarity Protection |
| Interference |
Minimal RFI/EMI Radiation |
| Height |
4.00 in. |
| Diameter |
7.20 in. |
| Certification |
SAE Class 1 for amber L31 models |
| Standards |
SAE J595 and SAE J845 |
| Industry Standard |
NFPA 1900 Contributor |
| Warranty |
5 Years |
Applications
| Application |
Use |
| Water Trucks |
Fixed amber warning light for cab, body, or equipment-deck installation |
| Construction Equipment |
Increased equipment visibility around active jobsites |
| Utility and Municipal Vehicles |
Warning coverage during roadside and public-works operations |
| Service and Vocational Trucks |
Permanent amber warning lighting for commercial fleets |
Selection and Installation Notes
| Consideration |
Guidance |
| System Voltage |
L31HAF is standard 12 VDC; select the designated F4 model for 24 VDC |
| Mounting |
Secure to a flat surface in the normal dome-up orientation |
| Pipe Mounting |
Use optional L360PMKT for 1-inch NPT pipe mounting |
| Circuit Protection |
Use a 5-amp fuse for the standard 12 VDC circuit |
| Wiring |
Use properly sized wiring; waterproof exposed connections and protect pass-throughs with a grommet |
| California Compliance |
Select L31HAFCA when California Title 13 compliance is required |
| Visibility |
Position the beacon so its warning output is not obstructed |
| Cleaning |
Clean with soap and water; do not use a pressure washer |