Federal Signal

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Audible Devices

504WB Vibratone® Bell Assembly

  • Available in 120VAC
  • Four-inch gong
  • Produces 98dBa @ 10' (107dBa @ 1m)
  • Type 3R enclosure
  • UL and cUL Listed, CSA Certified and FM Approved

Federal Signal's Vibratone® Bells Models 504WB and 506WB are completely assembled and include the gong, vibrating AC mechanism, and the gasketed back box. These assemblies feature heavy duty, industrial grade housings and powder-coat paint treatments for added durability and performance.

These bells are offered in 120VAC.

The four inch, heavy duty gong, produces 98dBa @ 10' (107dBa @ 1m). The six inch heavy duty gong produces 100dBa @ 10' (109dBa @ 1m). Vibratone gongs are tempered to give them superior output and long lasting durability.

The Models 504WB and 506WB both contain internal terminal blocks which simplifies installation. This method also allows for an uninterrupted, single run of wiring.

These bells are UL and cUL Listed, CSA Certified and FM Approved. The entire assembly is rated for Type 3R.


Part # Description Ship Weight Net Weight  
504WB-120 4" Vibrating bell, 120VAC, weatherproof back box 1.65 lbs. 1.05 lbs. Add to Quote >


Part # Description Ship Weight  

Replacement Parts

Description Part #  


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
Signal appliances, audible, certified to U.S. standards 4812_84.pdf
Factory Mutual (FM)
FM Approval Guide FM_Approval_Guide.pdf



Voltage 120VAC
Mount Surface
Operating Current 0.08 Amps at 120VAC
Decibel Output

98 at 10 Feet

107 at 1 Meter

Operating Temperature Min. -31 F
Operating Temperature Max. 150 F
Enclosure Rating Type 3R
Height 5.3 IN
Width 5.3 IN
Depth 4 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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