
Contact for Pricing
Overview
- 24VDC voltage rating for low-power industrial applications.
- Clear glass housing provides high visibility while maintaining explosion-proof integrity.
- UL and cUL CID1 certification ensures compliance with fire safety standards.
- Supervised and hearing-impaired design meets accessibility requirements.
- Mount sold separately for flexible installation in various hazardous locations.
Specifications
-67 to 150 | DEG F |
0.63 at 24V/1.02 at 16V | A |
1.02 @ 16VDC/0.63 @ 24VDC | A |
10,000 | HR |
11.37 H x 8.82 W x 8.82 D | IN |
150 | ECP |
24 | VDC |
24 Regulated (16-33) | VDC |
24 Vdc | V |
60 | FLPM |
Amperage | 0.63 at 24V/1.02 at 16V A |
Amperage Rating | 0.63 at 24V/1.02 at 16V AMP |
Application | Indoor/Outdoor |
Average Life | 10,000 HR |
Brand Name | Federal Signal |
Candela Power | Candela Power Per UL 1971 - 30 |
Candle Power | 150 ECP |
Color | Red |
Color | Clear |
Diameter | 8.82 in (224 mm) |
Environmental Conditions | -67 to 150 DEG F |
Flashes Per Minute | 60 FLPM |
Light Source | Strobe Tube |
Material | Cast Aluminum Housing |
Model | 24XSTHI |
Mounting | 3/4-Inch NPT Pendant/Ceiling/Wall |
Mounting | 3/4-Inch NPT Pendant,Ceiling,Wall |
NEMA Rating | Type 4X, IP66, IP69K Enclosure |
Operating Temperature | -67D to +150DF (-55D to +65DC) |
Power Peak | 150 |
Shape | Cylindrical |
Size | 11.37 H x 8.82 W x 8.82 D IN |
Special Features | Current In-Rush Limiting PCB Design |
Standard | UL Listed/cUL Listed/UL Fire Listed/Marine Rated |
Standard | UL Fire |
Style | Strobe |
Type | Explosion-Proof Hearing Impaired Supervised Strobe Light |
Voltage Rating | 24 Vdc |
Package Dimensions (L x W x H) | 16.25 IN x 11.13 IN x 11.13 IN |
Package Dimensions (L x W x H) | 41.275 cm x 28.2702 cm x 28.2702 cm |
Package Weight (Imperial) | 17.300 L |
Package Weight (Metric) | 7.847 kg |

24XSTHI-CN
Strobe Light, Explosion-Proof, Supervised, Hearing-Impaired, UL and cUL CID1, ULC Fire Listed, 24VDC, Clear, Mount Sold SeparatelyFrequently Asked Questions
What is the operating voltage for the 154XST strobe?
The 154XST hazardous location supervised strobe light operates on 24VDC.
What are the candela ratings for the 154XST strobe?
The 154XST strobe light has a peak candela of 520,000 and an effective candela of 165.
What is the flash rate of the 154XST strobe light?
The 154XST hazardous location supervised strobe light produces 80 flashes per minute.
What are the available dome colors for the 154XST?
The 154XST strobe light is available with five dome colors: Amber, Blue, Clear, Green, and Red.
What are the mounting options for the 154XST strobe?
The 154XST strobe light offers 3/4-inch NPT pipe mount or surface mount options.
What is the expected lifespan of the 154XST strobe tube?
The 154XST strobe light features a 10,000-hour high-intensity strobe tube.
What are the environmental ratings for the 154XST?
The 154XST has a Type 4X, IP66 enclosure, is IP69K compliant, and is Marine Rated for indoor/outdoor use.
What hazardous locations is the 154XST certified for?
The 154XST is UL and cUL Listed for Class I, Division 2, Groups A, B, C and D; Class II, Division 1, Groups E, F and G; and Class III.
Does the 154XST include a dome guard?
Yes, a dome guard is included with the 154XST hazardous location supervised strobe light.
How is the 154XST wired for supervision?
The 154XST uses four wires and includes a supervisory diode for proper FACP supervision.
How to Install the 24XSTHI Strobe Light
This guide provides step-by-step instructions for installing and configuring the 24XSTHI strobe light for use in hazardous locations.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, Terminal connectors, 18 AWG wire or larger
- Unpack and Inspect the Unit
Carefully unpack the 24XSTHI strobe light and inspect it for any damage that may have occurred during transit. Do not proceed with installation if the unit is damaged.
- Mount the Strobe Light
Install the ceiling mount on the support surface using the four external mounting slots. Ensure the mount is securely attached and level.
- Connect Electrical Wires
With power off, connect the incoming positive wire to the terminal marked 'L+' and the outgoing positive wire to the terminal marked 'B'. Connect the incoming negative wire to 'N–' and the outgoing negative wire to 'A'. If required, connect the earth ground wire to the green screw.
- Secure the Strobe Light
Thread the strobe light fixture clockwise into the ceiling mount and tighten it securely to ensure proper installation.
- Test the Installation
After completing the installation, restore power and test the strobe light to ensure it is functioning correctly. Verify that all connections are secure and that the unit operates as intended.
Frequently Asked Questions about Federal Signal
What certifications and standards do Federal Signal products comply with?
Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.
What is Federal Signal's warranty policy?
Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.
What industries and applications are Federal Signal products used for?
Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.
What technical support does Federal Signal offer?
Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.
What are the main product lines offered by Federal Signal?
Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.
What are the key features of Federal Signal products?
Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.
What environmental ratings do Federal Signal products have?
Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.
What accessories are available for Federal Signal products?
Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.
What communication protocols do Federal Signal products support?
Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.
How are Federal Signal products typically installed?
Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.


