Federal Signal’s Fireball® Supervised Light is an economical solution to a wide variety of stationary requirements.
Model FB24ST features a voltage in-rush limiting PCB design that provides greater compatibility with control systems and less electrical interference with in-rush sensitive devices. Model FB24ST contains a supervisory diode and four wire leads, for use in fire alarm applications.
Fireball Supervised Strobe is a very low-maintenance warning light for industrial applications where a vibration-resistant light is required to signal an emergency or process status.


Voltage 24VDC
Material 1/2" Pipe
Operating Current 0.70 Amps at 24VDC (2.0 amps, in-rush)
Dome Colors Amber
Operating Temperature Minimum -31 °F
Operating Temperature Maximum 150 °F
Light Source/Lamp Style Strobe Tube
Lamp Life 10,000 Hours
Flash Rate/Minute 80 at 24VDC
Peak Candela 1,000,000
Effective Candela 300
Ingress Protection (IP) IP66
Enclosure Rating Type 4X
Net Weight 1.45 lb
Shipping Weight 1.70 lb
Height 5.250 in
Diameter 4.100 in


IP69K Compliant Products Video (1:33)

Ordering Information

Model Types
Model Description UPC
FB24ST-024A Strobe, 24VDC, 4-wire, in-rush limited, amber 782979216391
FB24ST-024B Strobe, 24VDC, 4-wire, in-rush limited, blue 782979216407
FB24ST-024C Strobe, 24VDC, 4-wire, in-rush limited, clear 782979216414
FB24ST-024G Strobe, 24VDC, 4-wire, in-rush limited, green 782979216421
FB24ST-024R Strobe, 24VDC, 4-wire, in-rush limited, red 782979216438
Product # Description UPC
LCMB2 Mounting bracket, corner 782979253709
LWMB2 Mounting kit, wall mount 782979253808
Replacement Parts
Description Part Number UPC
Dome Kit, FB2, Amber K8550320A 782979119661
Dome Kit, FB2, Blue K8550320A-01 782979119678
Dome Kit, FB2, Clear K8550320A-02 782979119685
Dome Kit, FB2, Green K8550320A-03 782979119692
Dome Kit, FB2, Red K8550320A-04 782979119708
Flash Tube, Trigger Coil Assembly K8107177A 782979114321