Federal Signal

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Audible Devices

300GC SelecTone® Audible Signaling Device

  • Available in 24VAC/VDC, 120VAC and 240VAC
  • Built-in gain control
  • Produces 0dBa to 110dBa @ 10' (0dBa to 120dBa @ 1m)
  • Type 3R, IP54 enclosure
  • Digital signal amplification
  • Fused input and output
  • UL 1480 and CSFM Approved
  • UL and cUL Listed

Federal Signal's Model 300GC SelecTone® Speaker Amplifier is designed to produce crisp, clear tones, digital voice messages and live public address in harsh environments with high ambient noise levels.

The rugged speaker cone and projector are constructed of spun aluminum. The internal circuitry, tone module, and gain control are contained in a housing constructed of die-cast aluminum. All surfaces are sealed with powder-coat paint. Dust- and moisture-proof gaskets provide protection from the elements.

The 300GC is UL Listed for indoor and outdoor use. It has been designed, tested and approved for use in Type 3R applications.

Internal gain control allows output adjustment from 0dBa to a maximum of 110dBa at 10 feet.

SelecTone Speaker Amplifiers are used individually or as part of a plant-wide emergency notification system. The Model UTM Universal Tone Module, with 32 tones, or the TM33 Custom Tone Module is plugged into a single SelecTone Speaker Amplifier for stand-alone use or into a SelecTone Command Unit for plant-wide signaling.

For plant-wide signaling, a Connector Kit is installed into each SelecTone Speaker Amplifier and wired to a central controller. SelecTone Command Units and CommCenter® Digital Message Centers broadcast tones, voice messages, melodies and live public address to an unlimited number of SelecTone Speaker Amplifiers.

Typical applications for SelecTone include emergency warning, plant evacuation, start and dismissal, public address, and process control signaling.

Special Considerations

  • Specify Tone Module for stand alone operation
    • Universal Tone Module (UTM)
    • Custom Tone Module (TM33)
  • Specify Connector Kit for use in systems (Call us for system design assistance)
    • 25Vrms Connector Kit (AM25CK)
    • 70Vrms Connector Kit (AM70CK)


Part # Description Ship Weight Net Weight  
300GC-024  SelecTone® signal, 24VAC/DC, gain control 5.7 lbs. 4.5 lbs. Add to Quote >
300GC-120 SelecTone® signal, 120VAC, gain control 6.7 lbs. 5.5 lbs. Add to Quote >
300GC-240 SelecTone® signal, 240VAC, gain control 6.7 lbs. 5.5 lbs. Add to Quote >


Part # Description Ship Weight  

Replacement Parts

Description Part #  
Amplifier Assembly, 15W, 24VAC/DC, 120/240VAC K2005502A-04 Add to Quote >
Transformer, 120VAC K120857A Add to Quote >
Transformer, 240VAC K120858A Add to Quote >
Speaker Assembly K8593082A Add to Quote >
Voice Coil, Series C K8593035A Add to Quote >


Listed By Underwriter's Laboratory (ULus)
Audible signal appliance, general signal UCST_E4813.pdf
Speakers UEAY-E4813.pdf
Listed By Underwriter's Laboratory For Use In Canada (cUL)
Audible signal appliance, general signal, certified for Canada UCST7_E4813.pdf
Speakers certified for Canada UEAY7-E4813.pdf
Listed By California State Fire Marshall (CSFM)
Audible signal device 7135_0811_003.pdf





24VAC 50/60Hz

120VAC 50/60Hz

240VAC 50/60Hz

Mount Surface
Operating Current*

1.10 Amps at 24VDC

1.10 Amps at 24VAC

0.30 Amps at 120VAC

0.20 Amps at 240VAC

Operating Temperature Min. -67 F
Operating Temperature Max. 150 F
Decibel Output

110 at 10 Feet

120 at 1 Meter

Standby Current

0.15 Amps at 24VDC

0.35 Amps at 24VAC

0.15 Amps at 120VAC

0.06 Amps at 240VAC

Enclosure Rating Type 3R
Ingress Protection (IP) IP54
Height 12.4 IN
Width 7.9 IN
Depth 8.5 IN
*Operating current per UL measured maximum
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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