Federal Signal’s Model 27XST explosion-proof strobe light features a voltage in-rush limiting PCB design that provides greater compatibility with factory automation control systems and less electrical interference with in-rush sensitive devices.

Federal Signal’s Model 27XST has an effective candela (ECP) of 850 and a two million peak candela. Three mounting options available:  pendant, ceiling or 90° wall mount. For easy installation, the mounting box is first installed and the fixture is then threaded onto the mounting box, making the electrical connection. Pre-install the mounting bracket, electrical continuity is made when five threads are engaged. 

Federal Signal’s Model 27XST is specifically designed for explosion-proof atmospheres and/or corrosive environments. Because it is easy to install and requires very low maintenance, it is ideal for use in areas such as oil rigs, mines, refineries, and chemical plants.


Monitoring Resistors Optional 3/4" Pendant Mount Kit
Optional Wall Mount Kit
Optional Ceiling Mount Kit
Voltage 24VDC
120VAC 50/60Hz
Operating Current 24VDC: 1.90 Amps (3.0 Amp In-rush)
120VAC: 1.14 Amps
Light Source/Lamp Style Strobe Tube
Lamp Life 10,000 Hours
Flash Rate/Minute 80
Peak Candela 2000000
Effective Candela 850
Operating Temperature Range -67˚F (-55˚C) to 150˚F (65˚C)
Enclosure Rating Type 4X
Ingress Protection (IP) IP66
Dome Guard Sold Separately
Dome Colors Amber
Net Product Weight
Signal without Mounting 13.9 lbs
Ceiling Mount 4.5 lbs
Pendant Mount 2.0 lbs
Wall Mount 5.9 lbs

Ordering Information

Model Types
Model Description UPC
27XST-024A-MOD Explosion-proof strobe, modular, in-rush limited, 24VDC, amber 78297923249
27XST-024B-MOD Explosion proof strobe, modular, in-rush limited, 24VDC, blue 78297923250
27XST-024C-MOD Explosion-proof strobe, modular, in-rush limited, 24VDC, clear 78297923251
27XST-024G-MOD Explosion-proof strobe, modular, in-rush limited, 24VDC, green 78297923252
27XST-024M-MOD Explosion-proof strobe, modular, in-rush limited, 24VDC, magenta 78297923253
27XST-024R-MOD Explosion-proof strobe, modular, in-rush limited, 24VDC, red 78297923254
27XST-120A-MOD Explosion-proof strobe, modular, 120VAC, amber 78297923256
27XST-120B-MOD Explosion-proof strobe, modular, 120VAC, blue 78297923257
27XST-120C-MOD Explosion-proof strobe, modular, 120VAC, clear 78297923258
27XST-120G-MOD Explosion-proof strobe, modular, 120VAC, green 78297923259
27XST-120M-MOD Explosion-proof strobe, modular, 120VAC, magenta 78297923260
27XST-120R-MOD Explosion-proof strobe, modular, 120VAC, red 78297923261
Replacement Parts
Description Part Number UPC
Dome assembly, explosion-proof light, black K8436147A 782979200352
Dome, amber K8550C095A-02 782979218159
Dome, blue K8550C095A-01 782979401957
Dome, clear K8550C095A 782979250302
Dome, green K8550C095A-04 782979218234
Dome, magenta K8550C095A-07 782979237105
Dome, red K8550C095A-03 782979218166
24V Mechanism K8436107F-03 782979200116
120V Mechanism K8436107E-02 782979227427
Strobe tube K8107159A 782979200277