Whelen L21HAP 12V Amber High-Dome Super-LED Beacon — UnitedBuilt Equipment Skip to content
Quality Water Truck Systems, Tanks & Parts Since 1947
Quality Water Truck Systems, Tanks & Parts Since 1947
Beacon Light, Super-LED® Beacon, High Dome, Permanent (Amber), Whelen L21HAP - UnitedBuilt Equipment

Beacon Light, Super-LED® Amber, High Dome, Permanent/Pipe/J-Hook Mount, 12 VDC, Whelen L21HAP

SKU 0012620
Brand Whelen
Availability:
2 in stock | Available on backorder
Save 47% Save 47%
$431.00
$431.00 - $431.00
$431.00
$230.00
$230.00 - $230.00
$230.00
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Prop 65 Cancer and Reproductive Harm Warning

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Product Images

Images are for representation only and may differ from the actual product.

The Whelen L21HAP is a high-dome amber Super-LED® beacon engineered to provide high-intensity, 360-degree warning visibility for water trucks, construction equipment, utility vehicles, municipal fleets, and other commercial vehicles operating around jobsites or roadways.

This 12 VDC L21 Series model combines permanent, 1-inch NPT pipe, and J-hook mounting provisions in one beacon base. It provides 25 Scan-Lock™ flash patterns and can synchronize or alternate with compatible Whelen beacons for coordinated vehicle warning coverage.

The L21HAP features a hard-coated polycarbonate dome, polycarbonate base, fully encapsulated solid-state electronics, reverse-polarity protection, and minimal RFI/EMI radiation. Its rugged construction is designed for long service life in harsh weather and heavy-duty operating environments.

Key Features

Feature Details
360-Degree Warning Output High-intensity amber warning visibility around the vehicle
Super-LED® Optics Consistent LED warning output with low current draw
High-Dome Configuration Maximum-visibility L21 dome profile
Combination Mounting Supports permanent, 1-inch NPT pipe, or J-hook installation
Scan-Lock™ Select from 25 available flash patterns
Sync Capability Synchronize or alternate patterns with compatible Whelen beacons
Encapsulated Electronics Resists moisture, vibration, and corrosion

Specifications

Attribute Details
Brand Whelen
Series L21
Model L21HAP
UnitedBuilt SKU 0012620
Product Type Amber LED Beacon Light
Light Color Amber
Dome Profile High Dome
Optics Super-LED®
Control SmartLED®
Voltage 12 VDC
Current Draw at 12.8 VDC 1.5 amps peak / 0.6 amps average
Flash Patterns 25 Scan-Lock™ patterns
Mounting Permanent, 1-inch NPT pipe, or J-hook
Dome Material Hard-Coated Polycarbonate
Base Material Polycarbonate
Electronics Fully Encapsulated, Solid State
Electrical Protection Reverse-Polarity Protection
Interference Minimal RFI/EMI Radiation
Height 6.81 in.
Diameter 6.44 in.
Certification SAE Class 1 for amber L21 models
Standards SAE J595, SAE J845, R10
Warranty 5 Years

Applications

Application Typical Use
Water Trucks Cab-, body-, bracket-, or pipe-mounted amber warning light
Construction Equipment Increased equipment visibility around active jobsites
Utility and Municipal Vehicles Warning coverage during roadside or public-works operations
Service and Vocational Trucks Permanent amber warning lighting for commercial fleets

Selection and Installation Checks

Check Guidance
System Voltage L21HAP is the 12 VDC configuration; use the designated 24 VDC model when required
Mounting Method Confirm whether the installation will use the permanent, 1-inch NPT pipe, or J-hook provision
Circuit Protection Protect the beacon circuit with a 3-amp fuse as directed by Whelen
Wiring Use appropriate 18 AWG wiring and waterproof connections where exposed to moisture
Base Orientation Position the drain hole toward the rear of the vehicle
Visibility Install where the beacon’s warning output will not be obstructed
Cleaning Clean the dome with soap and water; do not use a pressure washer