Federal Signal

- Safety and Security Systems / Industrial request quote contact us
Call Us Toll-Free: 877.268.3700

Audible Devices

350TR Vibratone® Horn

  • Effective range of 200 feet
  • Coded or sustained tones
  • 24 and 120VAC
  • Produces 100dBa at 10ft (110dBa at 1m)
  • Type 4X and Type 12 enclosure
  • UL and cUL Listed*, CSA Certified, and FM Approved

The Models 350TR and 450TR Vibratone® Horns produce a very loud horn tone by the electro-mechanical vibration of a diaphragm. Capable of reproducing coded blasts or sustained tones, Federal Signal's Vibratone horn is excellent for general alarm, start and dismissal, coded paging, and process control signaling in areas of high ambient noise levels.

Well suited to the requirements of panel builders and other OEM customers, the 350TR and 450TR offer the benefits of quick and simple surface mount installation. Each horn is supplied with a gasketed trim ring. The trim ring is streamlined but durable, constructed of 18-guage aluminum with Neoprene™ gaskets between the mounting surface and trim ring and between the trim ring and horn. The trim ring is sealed with gray powder coat paint for long life and corrosion resistance.

The Vibratone Model 350TR is available in 24VAC and 120VAC operating voltages. The Model 350TR produces 100dBa at ten feet (110dBa at 1 meter).

The Vibratone Model 450TR is available 24VDC. The Model 450TR produces 99dBa at ten feet (109dBa at 1 meter).

Vibratone horns are UL Listed, CSA Certified and FM Approved. The Models 350TR and 450TR are approved for Type 4X and Type 12 applications.

Each Vibratone horn is enclosed in a zinc die-cast housing and sealed with powder-coat paint. The Model 350TR features a stainless steel diaphragm. The Model 450TR utilizes an aluminum alloy diaphragm and heavy duty contacts. The rugged construction of the Vibratone horns resists vandalism and the effects of harsh industrial environments.

Compact size, loud output and heavy-duty construction make the VibraTone horns ideal for industrial and institutional signaling applications.

*Model 350TR only


Part # Description Ship Weight Net Weight  
350TR-024 Vibratone horn and trim ring, 24VAC 1.8 lbs. 1.7 lbs. Add to Quote >
350TR-120 Vibratone horn and trim ring, 120VAC  1.8 lbs. 1.7 lbs. Add to Quote >


Part # Description Ship Weight  
PR Projector, single, gray 1.15 lbs. Add to Quote >
PR2 Projector, double, gray 1.7 lbs. Add to Quote >
TR Mounting trim ring for 350 and 450 horns 1 lbs. Add to Quote >

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
Audible signal appliances ULSZ_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_LR5835_30.pdf
Factory Mutual (FM)
FM Approval Guide FM_Approval_Guide.pdf




24VAC 50/60Hz

120VAC 50/60Hz




4" Square Electrical Box

Operating Current

0.90 Amps at 24VAC

0.18 Amps at 120VAC

Decibel Output

100dB Using 24 and 120VAC at 10 Feet

110dB Using 24 and 120VAC at 1 Meter

Operating Temperature Min. -65 F
Operating Temperature Max. 150 F
Duty Cycle Not rated for continuous duty
Enclosure Rating

Type 4X

Type 12

Height 5.6 IN
Width 5.6 IN
Length 2.5 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
Contact Us | Privacy Policy | Credit Application