Federal Signal AD-56C - Atkinson Dynamics Wall Mount Intercom, 24VDC, Primary Unit - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.
Federal Signal

AD-56C

Alternate Item Number: ad-56-atkinson-dynamics-intercom

UPC: 782979206743


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Installation InstructionsLine DrawingSpecification SheetWarranty

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Overview

The Federal Signal AD-56C Atkinson Dynamics Wall Mount Intercom is engineered for demanding industrial environments, delivering reliable two-way communication in a rugged, weather‑proof package. With a 24VDC voltage rating, this heavy‑duty intercom provides consistent performance across a wide range of applications. The cast aluminum housing, finished with a durable powder coat, protects the internal components from harsh conditions while maintaining a sleek appearance. Certified with a Type 4X NEMA enclosure, the unit is marine listed and meets CSA, UL, and cUL safety standards, ensuring compliance for critical infrastructure. Featuring a single-channel design, it supports clear, two‑way voice communication, complemented by an integrated volume control and Talk/Listen switch for user‑friendly operation. The balanced line output and 25‑watt speaker deliver crisp audio quality, making the AD-56C an ideal choice for indoor and outdoor industrial settings where reliability and durability are paramount.
  • 24VDC voltage rating for reliable industrial performance.
  • Heavy-duty cast aluminum housing with rugged powder coat finish.
  • Type 4X NEMA enclosure, marine listed, UL/cUL listed.
  • Single-channel, two-way communication with integrated volume control and Talk/Listen switch.
  • Balanced line output and 25W speaker for clear audio.

Specifications

-31 to 150
DEG F
24
VDC
24 Vdc
V
5.03
IN
6.5
in
9.88
IN
Application
Indoor/Outdoor
Brand Name
Federal Signal
Enclosure
Type 4X
Frequency Response
320 Hz - 8.0 kHz
Height
9.88 IN
Length
5.03 IN
Material
Cast Aluminum
Mounting
Wall
Mounting Type
Wall Mount
Nema Rating
Type 4X
Number Of Lines
One
Operating Current
1.65 AMP
Operating Temperature
-31 to 150 DEG F
Operating Temperature, Maximum
150 F
Operating Temperature, Maximum
65.5556 C
Operating Temperature, Minimum
-31 F
Operating Temperature, Minimum
-35 C
Operating Voltage
24VDC
Series
Atkinson Dynamics
Special Features
Balanced Line Output
Standard
CSA,Marine,UL,cUL
Standard
UL Listed/cUL Listed/CSA Certified/Marine Listed
Sub Brand
Atkinson Dynamics
Type
Wall Mount Intercom
Type
Intercoms
Voltage Rating
24 Vdc
Width
6.5 IN
Package Dimensions (L x W x H)
8.13 IN x 7.25 IN x 15.13 IN
Package Dimensions (L x W x H)
20.6502 cm x 18.415 cm x 38.4302 cm
Package Weight (Imperial)
10.000 L
Package Weight (Metric)
4.536 kg
Atkinson Dynamics Wall Mount Intercom, 24VDC, Primary Unit, Microphone Ready - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.

AD-56C-7

Atkinson Dynamics Wall Mount Intercom, 24VDC, Primary Unit, Microphone Ready - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.
MINI OS WITH ID CARD READER_AL

M21312P1-A

MINI OS WITH ID CARD READER_AL

Frequently Asked Questions

What are the power requirements for the AD-56 model?

The AD-56 model operates on 24VDC. It has an operating current of 1.65 A and a standby current of 100 mA.

What is the operating temperature range for the intercom?

The intercom can operate in temperatures ranging from -31°F to 150°F (-35°C to 66°C).

What is the speaker rating of the AD-56 intercom?

The AD-56 intercom is equipped with a reliable 25-watt speaker.

What are the dimensions of the AD-56 intercom?

The AD-56 intercom has a height of 9.88 in, a width of 6.50 in, and a depth of 5.03 in.

What is the frequency response of the AD-56?

The AD-56 intercom has a frequency response range of 320Hz to 8.0Khz.

What is the net weight of the AD-56 intercom?

The net weight of the AD-56 intercom is 9 lbs (4.08 kg).

What is the primary use of the AD-56 intercom?

The AD-56 intercom is designed for single-channel, two-way indoor and outdoor communication applications. It is a heavy-duty industrial intercom.

Is the AD-56 intercom suitable for outdoor use?

Yes, the AD-56 is a heavy-duty industrial intercom designed for both indoor and outdoor applications. It features a Type 4X enclosure and is Marine rated.

What type of housing does the AD-56 intercom have?

The AD-56 intercom features a corrosion-resistant cast aluminum housing with a rugged powder coat finish. It is a Type 4X enclosure.

What certifications does the AD-56 intercom hold?

The AD-56 intercom is UL and cUL listed, CSA Certified, and Marine rated.

How to Install the AD-56C Intercom

This guide provides step-by-step instructions for installing and configuring the AD-56C intercom system, ensuring proper setup for effective communication.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, 1K 1W resistor, Audio cables

  1. Select the mounting location

    Choose a flat and rigid surface for mounting the intercom, ensuring it can support the weight of the unit.

  2. Mount the intercom

    Secure the intercom to the selected surface using the two mounting ears and appropriate screws. Ensure it is level and firmly attached.

  3. Connect power and audio lines

    Plug the intercom into a nearby power source. Connect the audio inputs in parallel, ensuring proper wire sizing for your application.

  4. Install the resistor

    If necessary, install the included 1K, 1W resistor across the audio lines to reduce noise. Only one resistor is needed for the entire system.

  5. Verify connections

    Use a multimeter to check all connections for continuity and proper voltage levels before powering on the intercom.

  6. Power on the intercom

    Once all connections are verified, power on the intercom and test functionality to ensure proper operation.

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.