Whelen Engineering Company, Inc.
5 years warranty
Hard Coating

L31 beacons provide the utmost versatility, featuring multiple mounting options and high dome models.

  • Powder-coated cast aluminum base
  • Conformal coated electronics
  • Full reverse polarity protection
  • Hard-coated domes
  • Rated for thousands of hours of use

Permanent Mount Models

  • 28 Scan-Lock™ flash patterns including 4 simulated rotating patterns
  • Alternately or simultaneously flash multiple patterns with up to eight Whelen Super-LED® beacons
  • Hi/Low intensity control
  • Cruise light feature

Magnetic & Magnetic/Suction Mount Models:

  • 80 lb. magnetic mounting base
  • 75 SignalAlert™ flashes per minute

WARNING: These products may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit whelen.com/regulatory.


L31 Dim

Size: 4” (102mm) H x 7.2” (182mm) Dia.


Voltage 12 VDC
Amps 4 amps (peak), 1.6 amps (average)
Electronics 100% solid-state
Certifications SAE Class 1 (Blue and Amber)

NFPA Zone C Upper requirements*

California Title XIII

Table 1B Certified (Amber+, Blue, and Red)

Warranty Five year warranty

* L31HRFN Red model

+ L31HA_CA models


Mount options Permanent


Magnetic/suction mount

Colors* Amber