Fire/EMS Allegiant® Light Bar

  • Low-profile, dual-color, linear light bar available in 45", 53", 61" and 70" lengths
  • Models are available in 12/24 Vdc
  • Top domes are available in Amber, Black, Blue, Clear, Gray and Red
  • SpectraLux  LED reflector technology is configurable in combinations of Amber, Blue, Green, Red, and White
  • Configurable alley and takedown positions
  • Solaris  LED reflector technology for better optical efficiency and superior off-axis warning
  • FSJoin™ enables the synchronization and programming of light bars and exterior/interior lights that works in conjunction with the Pathfinder  Siren (serial models only)
  • White LEDs can be utilized as takedowns and flood lighting
  • ROC (Reliable Onboard Circuitry™) reduces potential failure points
  • Auto dim option
  • Optional built in SignalMaster™ directional warning
  • (28) Built-in flash patterns
  • Models available with FS Convergence Network for “plug-n-play” installation and programming
  • Five-year warranty

Read More [+]


  • NFPA 1901
  • SAE J845 Class 1 (Amber, Blue, Red, White)
  • SAE J595 Class 1 (Amber, Blue, Red, White)
  • GSA-KKK-A-1822F (Amber, Red, White)
  • CCR Title 13 (Amber, Blue, Red)
  • IP65

The Allegiant light bar features a low-profile, linear design that provides a superior multi-color warning on vehicular applications. Designed to keep emergency personnel safe on the road, the Allegiant includes (28) high-performing, attention-getting flash patterns, built-in SignalMasterT™, and impressive floodlight capabilities.

SpectraLux® lights the way
Exclusive to Federal Signal, the SpectraLux multi-color LED technology provides the ability for a LED light source to change color while in operation. In each module of the light bar, through user selected flash patterns, the LEDs can change between Amber, Blue, Red and White (up to 2 in each module).

Patented Solaris and ROC (Reliable Onboard Circuitry)
Built with Solaris® LED reflector technology, the Allegiant® light bar is engineered to significantly increase off-axis warning and maximize the LED light source to eliminate dark spots and increase visibility while on the road. ROC technology minimizes potential failure points in the light bar — replacing wires, connectors and assemblies with PCB assemblies to reduce labor repair time and increases road time for law enforcement personnel.

Programming is made easy with FSJoin in conjunction with Pathfinder® light/siren controller. Through the Convergence Network software, multiple warning devices can be programmed to synchronize in order to create a unified vehicle solution.

Easy to Install and Operate
The Allegiant is available in traditional cable (discrete) and Convergence Network (serial) models. The discrete version features front/rear control, two modes of operation, and low power mode. Options including front flood, rear white lighting, bed light, and S/T/T are available. The serial models offer all the features and options of the discrete with additions of SignalMasterTM and cruise mode.

Configurable to fit your needs
There are multiple mounting options available for the Allegiant light bar including permanent, flat, hook, and low hook. The Allegiant comes in standard lengths of 45", 53", 61" and 70" and LED modules color combinations can be custom configured to fit your needs of warning lights.


Voltage12-24 Vdc
Current Draw @12 Vdc7 A9 A11 A13 A15 A
Current Draw@24 VdcN/A5 A6 A7 A8 A
Operating Temp-40˚ to 149˚ F (40˚ to 65˚ C)
Physical Specifications    
Length20.7 in (52.6 cm)44.5 in (113.0 cm)52.7 in (133.9 cm)60.9 in (154.7 cm)69.7 in (175.5 cm)
Width11.2 in (28.5 cm)11.2 in (28.5 cm)11.2 in (28.5 cm)11.2 in (28.5 cm)11.2 in (28.5 cm)
Height1.8 in (4.6 cm)2.0 in (5.1 cm)2.0 in (5.1 cm)2.0 in (5.1 cm)2.0 in (5.1 cm)
Ship Weight    
 16 lb (17.2 kg)23.0 lb (10.4 kg)26.6 lb (10.4 kg)30.2 lb (12.1 kg)33.8 lb (15.3 kg)



Ordering Info

Model Types
ALGT21D-NFPA20D21-inch, driver side, Red warning, takedowns, Clear domes, low profile permanent mount, discrete
ALGT21D-NFPA20P21-inch, passanger side, Red warning, takedowns, Clear domes, low profile permanent mount, discrete
AGT21D-NFPA2121-inch, Red warning, takedowns, Clear domes, low profile permanent mount, discrete
ALGT21D-NFPA2221-inch, Red warning, Clear domes, low profile permanent mount, discrete
ALGT21D-FIRE121-inch, Red warning, takedowns, Clear domes, low profile permanent mount, discrete
ALGT21-FIRE121-inch, Red warning, takedowns, Clear domes, low profile permanent mount, Convergence Network compatible, serial