Model A is a general-purpose electro-mechanical siren that produces a distinctive sound and tonal quality for industrial applications. It has a high maximum pitch which provides excellent contrast to industrial ambient noise. Introduced in 1918, Model A is still used today in many rugged and extreme environments and applications.

The fractional horsepower motor on Model A drives a ported aluminum rotor within the specially designed stator to produce a unique sound. A small internal fan cools the motor during operation. The recommended duty cycle is five minutes on/five minutes off. 

The Model A’s metal housing is sealed with red powder coat for an attractive appearance and superior corrosion-resistance. The swivel mount bracket accommodates wall and surface mount installations.


Voltage 120VAC/VDC
Mount Wall
Operating Current 1.9 Amps
Motor Universal
Decibel Output 103 at 10 Feet
113 at 1 Meter
Frequency Response 1060Hz
Duty Cycle Five minutes on/five minutes off
Enclosure Rating Type 3R
Shipping Weight 9 lb
Shipping Weight 11.60 lb
Width 12.360 in
Width 12.360 in
Width 12.360 in


Product Literature

Ordering Information

Model Types
Model Description UPC
A-120 Siren, 120VAC/DC, electromechanical, red 782979250302
Replacement Parts
Description Part Number UPC
Motor service kit and rotor assembly K8118052A 782979121558