Federal Signal AD-27D-4 - Intercom, 120VAC, T/L Switch, Volume Control, Secondary Unit, Extreme Conditions
Federal Signal

AD-27D-4

Alternate Item Number: ad-27-atkinson-dynamics-intercom

UPC: 782979204978


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Overview

The Federal Signal AD-27D-4 Intercom system stands as a testament to robust engineering, specifically designed to deliver unwavering communication reliability in the most demanding industrial and hazardous environments. This 120VAC-powered secondary unit is a critical component for any operation where clear, instantaneous voice communication is not just a convenience, but a necessity for safety and operational efficiency. Engineered for extreme conditions, the AD-27D-4 is built to withstand the rigors of constant use, environmental challenges, and potential impacts, ensuring it performs when you need it most. At its core, the AD-27D-4 features an intuitive talk/listen (T/L) switch, allowing for straightforward, full-duplex communication between master and secondary units. This essential functionality is complemented by an integrated volume control, providing users with the flexibility to adjust audio levels for optimal clarity, whether in a noisy factory floor or a remote outdoor site. The unit's design prioritizes user experience and operational effectiveness, making it an indispensable tool for supervisors, technicians, and safety personnel. Applications for the Federal Signal AD-27D-4 are vast and varied, spanning industries that commonly encounter challenging operational settings. This includes, but is not limited to: * **Manufacturing Plants:** Facilitating communication across large production floors, between control rooms and operational areas, and for emergency coordination. * **Construction Sites:** Enabling clear instructions and safety alerts in dynamic and often noisy environments, from ground level to elevated platforms. * **Oil and Gas Facilities:** Providing reliable communication in potentially hazardous zones where standard communication equipment may fail. * **Mining Operations:** Ensuring connectivity in subterranean or remote locations with harsh atmospheric conditions. * **Port and Marine Terminals:** Supporting logistics and safety protocols in exposed, weather-beaten areas. * **Power Generation Stations:** Facilitating communication for maintenance, operations, and emergency response teams. The Federal Signal brand is synonymous with high-quality, durable signaling and communication products, and the AD-27D-4 upholds this reputation. Its construction is geared towards longevity and dependable performance, minimizing downtime and maximizing the safety and productivity of your workforce. When selecting an intercom system for extreme conditions, the AD-27D-4 offers a proven solution that integrates seamlessly into existing communication infrastructures, providing a vital link for critical voice exchanges. Invest in the reliability and resilience that Federal Signal delivers, ensuring your team stays connected, informed, and safe, regardless of the environment.
  • Rugged intercom secondary unit designed for extreme environmental conditions.
  • 120VAC power input for standard industrial electrical systems.
  • Integrated Talk/Listen (T/L) switch for clear two-way communication.
  • Adjustable volume control for optimal audio clarity in noisy environments.
  • Durable construction ensures reliable performance in demanding industrial applications.

Specifications

-31 to 150
DEG F
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
Mounting
Wall
Number Of Lines
One
Operating Current
0.24 AMP
Operating Temperature
-31 to 150 DEG F
Operating Voltage
120VAC
Special Features
Balanced Line Output
Standard
UL Listed/cUL Listed/CSA Certified/Marine Listed
Standard
CSA,Marine,UL,cUL
Sub Brand
Atkinson Dynamics
Type
Wall Mount Intercom
Type
Intercoms
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)
10.700 L
Package Weight (Metric)
4.854 kg
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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.