Federal Signal A4 - Gong, 4", Mechanism Sold Separately
Federal Signal

A4

Alternate Item Number: vibratone-bells

UPC: 782979237105


Documents & Media
Installation InstructionsLine DrawingSpecification SheetWarranty

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Overview

The Federal Signal A4 (SKU A4) is a 4-inch metal gong designed for high-volume audible signaling in industrial and public spaces. This component delivers clear, resonant sound over long distances, making it suitable for alarm systems, safety alerts, and event announcements. The mechanism is sold separately, offering flexibility to pair with compatible drivers such as the Federal Signal 500 or 600 series mechanisms (e.g., 500-024-1 for 24VAC or 600-024-1 for 24VDC). Its compact 4-inch diameter and durable metal construction ensure reliable operation in harsh environments. Standard mounting hardware facilitates straightforward installation, and the design supports easy maintenance and component replacement. The A4 gong is ideal for factories, warehouses, and any setting requiring dependable audible alerts. Manufactured in the US by Federal Signal, it upholds a reputation for quality and durability in industrial signaling equipment. UNSPSC: 46171602.
  • 4-inch diameter metal gong for clear, resonant sound
  • Mechanism sold separately for flexible system integration
  • Durable construction for industrial environments
  • Ideal for alarm systems, safety alerts, and event announcements
  • Manufactured in the US by Federal Signal

Specifications

108
dBa
4 H x 4 W x 1.25 D
IN
98
dBa
Application
Indoor/Outdoor
Brand Name
Federal Signal
Color
Gray
dBa at 10ft
98 dBa
dBa at 1M
108 dBa
Dimensions
4 H x 4 W x 1.25 D IN
Enclosure
Type 3R With Optional Weatherproof Backbox
Loudness
98 DB
Mounting
Surface
Mounting Type
Standard mounting hardware
Operating Temperature
-31° to +150°F (-35° to +66°C)
Series
Federal Signal Gong Series
Size
4" diameter
Size
4"
Special Features
Modular Design Provides Greater Flexibility
Standard
CSA,UL
Standard
UL Listed/cUL Listed
Sub Brand
Vibratone
Type
Audible Signals
Package Dimensions (L x W x H)
1.75 IN x 5 IN x 4.5 IN
Package Dimensions (L x W x H)
4.445 cm x 12.7 cm x 11.43 cm
Package Weight (Imperial)
0.700 L
Package Weight (Metric)
0.318 kg
Gong, 6", Mechanism Sold Separately

A6

Gong, 6", Mechanism Sold Separately
Vibrating Bell Mechanism, UL and cUL, 24VAC, Gong Sold Separately

500-024-1

Vibrating Bell Mechanism, UL and cUL, 24VAC, Gong Sold Separately
Gong, 10", Mechanism Sold Separately

A10

Gong, 10", Mechanism Sold Separately
Vibrating Bell Assembly, 4", Weatherproof Back Box, UL and cUL, 120VAC

504WB-120

Vibrating Bell Assembly, 4", Weatherproof Back Box, UL and cUL, 120VAC
Vibrating Bell Assembly, 6", Weatherproof Back Box, UL and cUL, 120VAC

506WB-120

Vibrating Bell Assembly, 6", Weatherproof Back Box, UL and cUL, 120VAC
Vibrating Bell Mechanism, UL and cUL, 240VAC, Gong Sold Separately

500-240-1

Vibrating Bell Mechanism, UL and cUL, 240VAC, Gong Sold Separately
Vibrating Bell Mechanism, UL and cUL, 120VAC, Gong Sold Separately

500-120-1

Vibrating Bell Mechanism, UL and cUL, 120VAC, Gong Sold Separately
SelecTone Amplified Speaker, UL and cUL, 250VDC, Gray

300-250

SelecTone Amplified Speaker, UL and cUL, 250VDC, Gray
Vibrating Bell Mechanism, UL and cUL, 125VDC, Gong Sold Separately

600-125-1

Vibrating Bell Mechanism, UL and cUL, 125VDC, Gong Sold Separately
SelecTone Extension Module

EM3

SelecTone Extension Module
Vibrating Bell Mechanism, UL and cUL, 12VDC, Gong Sold Separately

600-012-1

Vibrating Bell Mechanism, UL and cUL, 12VDC, Gong Sold Separately
Resonating Horn, 120VAC, Gray

55-120-1

Resonating Horn, 120VAC, Gray

Frequently Asked Questions

What are the available gong sizes for Vibratone bells?

Vibratone bells are available in three gong sizes: Model A4 (4 in dia.), Model A6 (6 in dia.), and Model A10 (10 in dia.).

What types of vibrating mechanisms are available?

Two vibrating mechanisms are available: Model 500 (AC voltages) and Model 600 (DC voltages).

What are the voltage options for the Model 500 mechanism?

The Model 500 mechanism is available in 24VAC, 120VAC, and 240VAC.

What are the voltage options for the Model 600 mechanism?

The Model 600 mechanism is available in 12VDC, 24VDC, and 125VDC.

What is the decibel output of the A4 gong?

The A4 gong produces 98 dBa at 10 feet and 108 dBa at 1 meter.

What is the frequency of the A4 gong?

The A4 gong operates at a frequency of 1080Hz.

What is the current draw for the 24VAC Model 500 mechanism?

The 24VAC Model 500 mechanism draws 0.4 amps.

What is the current draw for the 24VDC Model 600 mechanism?

The 24VDC Model 600 mechanism draws 0.4 amps.

What is the recommended duty cycle for Vibratone bells?

The recommended duty cycle for Vibratone bells is 5 minutes ON followed by 5 minutes OFF.

What are the dimensions of the Model A4 gong?

The Model A4 gong is 4.0 inches high, 4.0 inches wide, and 1.25 inches deep.

How to Install the Bell Power Unit

This guide provides step-by-step instructions for installing the Bell Power Unit, including mounting, wiring, and gong installation.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter, 3/16" Hex wrench

Supplies needed:

Mounting screws #8-32 x 3/4", Wire nuts, Gong assembly, Split lockwasher

  1. Disconnect power

    Ensure that the power supply is disconnected before starting the installation to prevent electrical shock.

  2. Mount the power unit

    Secure the Bell Power Unit to a vertical surface using the provided #8-32 x 3/4" screws. Ensure the striker is facing down to optimize performance.

  3. Wire the power unit

    Connect the power supply leads to the power unit using the provided wire nuts. Ensure all connections are secure and insulated.

  4. Install the gong assembly

    Place the gong on the power unit, ensuring the locating pin engages the hole in the gong. Use the 3/16" hex socket machine screw and split lockwasher to secure the gong.

  5. Test the installation

    Reconnect the power supply and test the bell to ensure it operates correctly. If it does not function, verify all connections and mounting.

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.