Federal Signal

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Visual Signals

314X SelecTone® Explosion-Proof Audible Signaling Device

  • Available in 24VDC
  • Built-in gain control
  • 4-wire supervisable power circuit
  • IP 65, NEMA 4X Approved
  • UL Listed and CSFM Approved

The Federal Signal Model 304X and 314X Explosion Proof Amplified Speakers are designed to produce crisp, clear tones in supervised alarm notification systems. Both models are compatible with fire alarm, voice evacuation, suppression supervised control panels, and power boosters.

These amplified speakers can broadcast tones generated by a Tone Card installed into the speaker (the plug-in 32-tone UTM) or by a central tone source in a voice evacuation or paging system. When live public address or voice messages are required, plug-in Connector Cards (AM25CK or AM70CK) interface with the VRMS of the EVAC panel.

The speaker cone and projector are constructed of rugged spun aluminum. The solid-state amplifier circuit is protected in a diecast aluminum housing. Dust- and moisture-proof gaskets provide protection from the elements. All external surfaces are sealed with gray powder coat paint. A heavy-duty swivel mount bracket allows the installer to direct the output effectively.

The 304X and 314X are UL Listed for Class I, Division 1, Groups B, C and D.

The rugged construction and high output of the Model 304X and 314X make them ideal for use in harsh environments with high ambient noise levels. Both models feature an internal gain control for adjustment to suit area.

Special Considerations

  • Tone Card (UTM)
  • Specify Connector Kit for use in systems
    • Supervised Connector Kit (300CKS)
    • 25Vrms Connector Kit (AM25CK)


Part # Description Ship Weight Net Weight  
314X-024 SelecTone, 24VDC, explosion proof 32.4 lbs. 16.4 lbs. Add to Quote >


Part # Description Ship Weight  

Replacement Parts

Description Part #  
Amplifier Assembly K2005355A-02 Add to Quote >
Projector Assembly K8593101A Add to Quote >
Connector, 4-Position K140340B Add to Quote >


Listed By Underwriter's Laboratory (ULus)
Audible signal devices for use in hazardous locations UGKZ_E12629.pdf
Audible signal appliances ULSZ_E4813.pdf
Listed By California State Fire Marshall (CSFM)
Audible signal device 7135_0811_003.pdf
NEMA 4X Test Report (ETL)
Standard for Enclosures for Electrical Equipment, Form A ETL_3107796-001A.pdf
Standard for Enclosures for Electrical Equipment, Form B ETL_3107796-001B.pdf



Voltage 24VDC
Mount Swivel Bracket
Operating Current 1.0 Amps
Operating Temperature Min. -40 F
Operating Temperature Max. 150 F
Decibels per UL1480

97 at 10 Feet

107 at 1 Meter

Decibels on Axis

114 at 10 Feet

124 at 1 Meter

Standby Current 0.13 Amps
Enclosure Rating NEMA 4X
Ingress Protection (IP) IP65
Height 18.8 IN
Width 16.7 IN
Depth 19.5 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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