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. 

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.

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.


Voltage 120VAC 50/60Hz
240VAC 50/60Hz
Mount Surface
Operating Current 0.18 Amps at 120VAC
0.09 Amps at 240VAC
Operating Temperature Minimum -65 °F
Operating Temperature Maximum 150 °F
Decibel Output 100 at 10 Feet
110 at 1 Meter
Enclosure Rating Type 4X
Ingress Protection (IP) IP65
Net Weight 2.70 lb
Shipping Weight 2.80 lb
Shipping Weight 2.80 lb
Height 4.530 in
Width 4.530 in
Depth 3.660 in

Ordering Information

Model Types
Model Description UPC
350WB-120 Horn, 120VAC, weatherproof back box 782979200154
350WB-240 Horn, 240VAC, weatherproof back box 782979200161
WB-B Weatherproof back box, black 782979216728
Product # Description UPC
PR2-NM Projector, double, gray 782979233398
Replacement Parts
Description Part Number UPC
350/450 hardware kit K8435663B 782979116745
120VAC coil KFC1516C 782979100119
Coil, 240V, 350 KFC1506C 782979120933