Federal Signal

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Audible Devices

350WB Vibratone® Horn

  • Available in 120VAC and 240VAC
  • Effective range 200 feet
  • Coded or sustained tones
  • Wall mount
  • Produces 100dBa @ 10' (110dBa @ 1m)
  • Type 4X, IP65 enclosure
  • UL and cUL Listed, CSA Certified, and FM Approved

The Model 350WB (AC current) Vibratone® horn produces sound by the electro-mechanical vibration of a stainless steel diaphragm. The horn mechanism with diaphragm is attached to the grille. Indoor or outdoor use is made possible by the water- and dust-tight backbox.

The 350WB is available in 120 or 240VAC for 50/60Hz. The sound output level is 100dBa nominal at ten feet (110dBa @ 1m).

Model 350WB features a die-cast aluminum rear housing sealed with a gray enamel finish. The rugged outer housing resists vandalism without reducing sound output. Model 350WB is fused and utilizes a terminal block connection. The horn and backbox combination is UL and cUL Listed, CSA Certified and FM Approved.

Capable of reproducing coded blasts or sustained tones, Federal Signal's Vibratone horns are excellent for general alarm, start/dismissal, coded paging and process control signaling in areas where their sound output exceeds ambient noise levels. Compact size and various installation options make them ideal for institutional use.


Part # Description Ship Weight Net Weight  
350WB-120 Horn, 120VAC, weatherproof back box 2.8 lbs. 2.7 lbs. Add to Quote >
350WB-240 Horn, 240VAC, weatherproof back box 2.8 lbs. 2.7 lbs. Add to Quote >


Part # Description Ship Weight  

Replacement Parts

Description Part #  
Coil, 120VAC KFC1516C Add to Quote >
Volume Control Kit K8435663B Add to Quote >


Listed By Underwriter's Laboratory (ULus)
Audible signal appliance, general signal UCST_E4813.pdf
Listed By Underwriter's Laboratory For Use In Canada (cUL)
Audible signal appliance, general signal, certified for Canada UCST7_E4813.pdf
Certified by CSA International
Signal appliances, audible 4812_04.pdf
Factory Mutual (FM)
FM Approval Guide FM_Approval_Guide.pdf




120VAC 50/60Hz

240VAC 50/60Hz




Operating Current

0.18 Amps at 120VAC

0.09 Amps at 240VAC

Operating Temperature Min. -65 F
Operating Temperature Max. 150 F
Decibel Output

100 at 10 Feet

110 at 1 Meter

Enclosure Rating Type 4X
Ingress Protection (IP) IP65
Height 5.3 IN
Width 5.3 IN
Length 3.66 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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