
Federal Signal
AD-SO-25
Alternate Item Number: atkinson-dynamics-non-amplified-speaker
UPC: 782979208075
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Contact for Pricing
Overview
- 25 Watt speaker rating
- Wall mount design
- Heavy-duty cast aluminum housing with powder coat finish
- Operating temperature range: -50°F to 150°F
- Type 4X, IP66 rated enclosure for indoor/outdoor use
Specifications
-50 to 150 | DEG F |
4.26 | IN |
6.5 | in |
9.88 | IN |
Application | Indoor/Outdoor |
Brand Name | Federal Signal |
Enclosure | Type 4X, IP66 |
Frequency Response | 800 Hz - 5000 Hz HZ |
Frequency Response | 800 to 5,000 HZ |
Height | 9.88 IN |
IP Rating | IP66 |
Length | 4.26 IN |
Material | durable components |
Material | Cast aluminum with powder coat finish |
Mounting | Wall |
Mounting Type | Wall Mount |
Nema Rating | Type 4X |
Operating Temperature | -31D to +150DF (-44D to +66DC) DEG F |
Operating Temperature, Maximum | 150 F |
Operating Temperature, Maximum | 66 C |
Operating Temperature, Minimum | -31 F |
Operating Temperature, Minimum | -44 C |
Series | AD-SO |
Size | 9.88" (H) x 6.50" (W) x 4.26" (D) |
Special Features | Non-Amplified |
Sub Brand | Atkinson Dynamics |
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) | 10.000 L |
Package Weight (Metric) | 4.082 kg |

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AD-27A-3-4
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AD-26C-4
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AD-27A-6
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AD-56C-7
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AD-56D
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AD-26C-1-2
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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.
AD-57A-2
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310X-MV
AudioMaster Two-Way Intercom, Hazardous Location, UL and cUL CID2, Multi-voltage 24VDC or 120-240VACFrequently Asked Questions
What is the shipping weight of the AD-SO-25 speaker?
The shipping weight for the AD-SO-25 speaker is 10.0 lbs (4.53 kg).
What is the power rating of the AD-SO-25 speaker?
The AD-SO-25 speaker has a power rating of 25 watts.
What type of housing does the AD-SO-25 have?
The AD-SO-25 features a heavy-duty cast aluminum housing with a powder coat paint finish.
Can the AD-SO-25 speaker be used outdoors?
Yes, the AD-SO-25 speaker is suitable for both indoor and outdoor applications. It has a Type 4X, IP66 enclosure.
What is the mounting type for the AD-SO-25 speaker?
The AD-SO-25 speaker is designed for wall mounting.
What is the frequency response of the AD-SO-25?
The AD-SO-25 speaker has a frequency response range of 800-5000Hz.
What is the input impedance of the AD-SO-25 speaker?
The input impedance for the AD-SO-25 speaker is 8 Ohms.
What are the operating temperature limits for AD-SO-25?
The AD-SO-25 speaker can operate in temperatures ranging from -50°F to 150°F (-46°C to 66°C).
What are the dimensions of the AD-SO-25 speaker?
The AD-SO-25 speaker has a height of 9.88 inches, a width of 6.50 inches, and a depth of 4.26 inches.
Does the AD-SO-25 speaker have talk-back capability?
Yes, the AD-SO-25 speaker features talk-back capability.
How to Install the AD-SO-25 Speaker
This guide provides step-by-step instructions for mounting and wiring the AD-SO-25 speaker for optimal performance.
Estimated time: 45m
Tools needed:
Screwdriver, Wire strippers, Multimeter
Supplies needed:
Mounting screws, Terminal connectors
- Select the mounting location
Choose a flat and rigid surface capable of supporting the weight of the AD-SO-25 speaker, ensuring it is accessible for wiring and maintenance.
- Mount the speaker
Secure the AD-SO-25 speaker to the selected surface using the two mounting ears and appropriate screws. Ensure the speaker is level and firmly attached.
- Make electrical connections
Connect the audio wires to the speaker terminals, ensuring proper wire sizing as per the installation guidelines. Use terminal connectors for secure connections.
- Test the installation
Before powering on, double-check all connections and ensure the power is off. Once verified, power on the system and test the speaker for proper operation.
- Provide safety instructions
After testing, distribute a copy of the installation instructions to all operating personnel and establish a routine check procedure for the speaker's integrity and 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.

