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Whelen® L21 Super-LED® Class 1 Beacon, Magnetic Mount, Amber Lens

Traditional-profile beacon provides bright, long-lasting light
Item #: WBL42MAA
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Manuf. Part #: L21HAM
Weight (lbs): 2.5
Class: 1
Mounting: Magnetic
Lens Color: Amber
Price: $235.99
Quantity:  BUY NOW
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These Whelen beacons house six LEDs to provide bright, long-lasting light output.


Magnetic Mount beacons feature a polycarbonate base and 10'L power cord with switched plug.

Permanent Mount beacons feature a polycarbonate base and permanent 1" pipe mount. Class 1 beacon also includes 6"L pigtail.

  • Long Life: 100,000-hr. LED life outlasts a regular strobe tube 50-to-1
  • Standard Vehicle Voltage: 12V DC
  • Compact: 6-7/16" dia. x 6-13/16"H
  • Versatile: 14 or 24 selectable flash patterns, depending on item
  • Low Power Draw: .65A or 1.5A, depending on item
  • Compliant: SAE J845 Certified
Length 2 L21HAM
Battery Type 6-7/16"
Cut Size 0.60 Avg/ 1.5 Max
Fits Shoe Size Amber
Shape SAE J845 Class I
Shoe Size 0
Sleeve 12 LEDS
Sold As 6-13/16"
Spool Direction Magnetic
Size N/A
Socket Sizes 12VDC
Steel Reinforced 5 Years on LEDs
Wheel Size 10' Straight Cord
Sheave Diameter 14
Fits Amber
Shank Length Whelen

LED Beacons

Installation Guide

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All versions of WHELEN L21/L22 Super-LED® Beacons:
Item # Class Mounting Lens Color Each
WBL42MAA 1 Magnetic Amber $235.99
WBL41MAA 2 Magnetic Amber $165.99
WBL41PAA 2 Permanent Amber $155.99
WBL41PCA 2 Permanent Clear $155.99
WBL42PAA 1 Permanent Amber $235.99