Federal Signal 50GCB-120 - SelecTone Amplified Speaker, UL and cUL, 120VAC, Ceiling Mount
Federal Signal

50GCB-120

Alternate Item Number: 50gcb-selectone

UPC: 782979394716


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Overview

Federal Signal’s SelecTone 50GCB-120 amplified ceiling speaker (SKU 50GCB-120) delivers reliable, high-quality audio for industrial and commercial environments. Rated at 120 VAC, it integrates seamlessly with standard commercial power supplies, ensuring consistent operation even during voltage fluctuations. The speaker is UL and cUL certified, meeting strict safety and quality standards for long-term durability in harsh conditions like dust, vibration, and temperature extremes. Designed for ceiling mounting, the 50GCB-120 includes a robust mounting bracket for simplified installation and optimal acoustic placement. Its amplified design boosts sound pressure levels, making it ideal for large halls, warehouses, open-plan offices, and public address systems where clear communication is critical. The compact footprint and easy ceiling mount allow facilities to upgrade acoustic infrastructure without extensive rewiring or structural modifications. Federal Signal’s SelecTone 50GCB-120 is a versatile choice for safety alert networks, background music, or emergency notification systems. Its durable construction and Federal Signal’s engineering excellence ensure reliable performance in demanding industrial settings, providing crisp, intelligible audio that meets modern workplace demands.
  • 120 VAC voltage rating for standard commercial power compatibility
  • UL and cUL certified for safety and quality assurance
  • Ceiling mount design with robust mounting bracket for easy installation
  • Amplified output for clear, high-pressure sound in large spaces
  • Durable construction for harsh industrial environments (dust, vibration, temperature extremes)

Specifications

-31 to 151
DEG F
0.04
AMP
64 to 88
DB
7.23 H x 7.23 W x 2.53 D
IN
88
dBa
98
dBa
Application
Indoor
Brand Name
Federal Signal
Color
White
dBa at 10ft
88 dBa
dBa at 1M
98 dBa
Diameter
7.23 in (183.6 mm)
Dimensions
7.23 H x 7.23 W x 2.53 D IN
Enclosure
Type 1, IP41
Loudness
64 to 88 DB
Mounting
Ceiling
Operating Current
0.04 AMP
Operating Temperature
-31 to 151 DEG F
Operating Voltage
120VAC 50-60Hz
Special Features
Produces Crisp, Clear Tones, Digital Voice Messages and Live Public Address
Standard
CSFM,UL,cUL
Standard
UL Listed/cUL Listed/CSFM Approved
Standby Current
0.027
Sub Brand
SelecTone
Type
Amplified Speaker
Voltage Rating
120 VAC
Package Dimensions (L x W x H)
8 IN x 8 IN x 4.63 IN
Package Dimensions (L x W x H)
20.32 cm x 20.32 cm x 11.7602 cm
Package Weight (Imperial)
2.300 L
Package Weight (Metric)
1.043 kg
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Frequently Asked Questions

What is the SelecTone product family?

SelecTone is a universal solution for industrial public notification, covering communication applications. It includes command units and powered loudspeakers designed for harsh environments.

What happens if a SelecTone device fails?

If one device fails, the SelecTone system will not; other devices will continue to operate. Each speaker and amplifier can also be used for stand-alone signaling.

What components make up a SelecTone system?

A SelecTone system consists of command panels, powered loudspeakers, connector cards, and tone modules for comprehensive industrial signaling.

What is the purpose of SelecTone Connector Cards?

Connector Cards provide communication with the SelecTone Command Unit. They can also add SelecTone speakers and amplifiers to existing public address systems.

What do SelecTone Tone Modules provide?

Tone modules offer a selection of 32 distinct tones via UTM card or custom digital messages in any language with a TM33-SD card.

What are the power options for SelecTone Command Units?

SelecTone Command Units are available with 24V AC/DC, 120VAC, or 240VAC power options.

Are there SelecTone speakers for hazardous locations?

Yes, SelecTone offers 15W and 30W amplified speakers for hazardous locations, including CID2 and explosion-proof CID1 models.

What voltages are available for explosion-proof speakers?

Explosion-Proof 15W and 30W SelecTone speakers are available in 24VAC/DC or 120-240VAC models.

Does SelecTone offer supervised speaker models?

Yes, SelecTone offers supervised 15W amplified speakers, including standard, hazardous location, and explosion-proof models, all operating on 24VDC.

What certifications do Federal Signal products hold?

Federal Signal products meet or exceed UL, cUL, ULC, CSA, ATEX, IECEx, CE, UKCA, and other global certifications.

How to Install the Federal Model 50GCB Selectone® Speaker

This guide provides step-by-step instructions for installing and configuring the Federal Model 50GCB Selectone® Speaker for effective signaling and communication.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws (8-32 x 1-1/4"), Wire nuts

  1. Unpack and Inspect the Unit

    Carefully unpack the Model 50GCB and inspect it for any damage that may have occurred during transit. Ensure all parts listed in the kit contents are included.

  2. Mount the Speaker

    Using the R4NB back-box with hanger bracket, secure the speaker to the ceiling with the supplied 8-32 x 1-1/4" screws. Ensure the speaker is level and firmly attached.

  3. Connect Power Leads

    Connect the black power leads to the phase side of the line and the white leads to the common side of the line. Ensure the power is off during this connection to avoid electrical shock.

  4. Install Tone Module

    Insert the tone module into the receptacle at the rear of the 50GCB, ensuring the foil side of the circuit board is facing the speaker. Confirm that the connector is fully inserted and secured.

  5. Adjust Volume Control

    After connecting power, adjust the volume control (R2) to ensure the alarm signal is loud enough. Rotate clockwise to increase the volume.

  6. Verify Operation

    Turn on the power and verify that the speaker operates correctly. Test the sound output to ensure it meets the required specifications.

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.