The Federal Signal Model 24XSTHI Explosion-Proof Hearing Impaired Strobe Light produces 80 high-intensity flashes per minute. The 24XSTHI is Type 4X and IP66 rated. The 24XSTHI features a current in-rush limiting PCB design to provide improved compatibility with inrush sensitive devices. This design limits the peak In-rush to 2A and operates on only 0.63A, when powered by 24VDC. To synchronize strobe lights purchase the Synchronization Module (SSM) separately.

The 24XSTHI can be paired with a pendant, ceiling or wall mount sold separately. The installation process is simple, by pre-installing the mounting box, the fixture can be simply threaded onto the mounting box, making an electrical connection when the threads are engaged. 

Model 24XSTHI offers a heavy duty, copper free cast aluminum housing is sealed with a red powder coat paint.  This unit is specifically designed for explosion-proof atmospheres and/or corrosive environments. The 24XSTHI is ideal for use in areas such as oil rigs, mines, refineries, and chemical plants.


Voltage 24 VDC Regulated (16-33 V)
In-rush Current 2 A
Operating Current* @ 16 VDC 1.02 A
Operating Current @ 24VDC 0.63 A
Flash Rate/Minute 80
Candela 10,000 Hours
Light Source/Lamp Style Strobe Tube
Operating Temperature Range -67˚F (-55˚C) to 150˚ F (66˚C)
Net Weight - Signal without moutning 13.9 lb (6.3kg)
Net Weight Ceiling Mount 4.5 lb (2.0 kg)
Net Weight Pendant Mount 2.0 lb (0.9 kg)
Net Weight Wall Mount 5.9 lb (2.7 kg)


Ordering Information

Model Types
Model Description UPC
24XSTHI-MOD Explosion-Proof Supervised Hearing Impaired Strobe Light, UL Listed 78297923763
24XSTHI-CN Explosion-Proof Supervised Hearing Impaired Strobe Light, ULC Listed 78297924103
SSM Synchronization Module 78297921671
CMXC-R-SB Mounting kit, ceiling, 27XST/XL and 121X, Series D, red 782979230618
PMXC-R-SB Mounting kit, pendant, 27XST/XL, red 782979231196
WMXC-4R-SB Mounting kit, 90 degree, explosion-proof lights 782979230625
Product # Description UPC
DGXC-SB Dome Guard 78297922953
Replacement Parts
Description Part Number UPC
Chassis assembly, 24XST, 24VDC K8436107F-05 782979200314
Strobe tube K8107159A 782979200277