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EWS-11 Series

Rotating Edwards Warning Siren127 dB


The EWS-11 is discontinued.  Please refer to EWS-V9.

  • 127 dB @ 100 ft. (30.5 m)

  • Maintenance free siren & rotating mechanism

  • Self-contained battery & electrical connections

  • Powder coated exterior

Featuring the industry’s largest drive motor, this 8 HP, battery powered rotating siren delivers all the features one expects from a premium warning device.

Utilizing a 460 Hz tone, the EWS-11's low pitch is designed to penetrate structures and obstacles, making the warning area more complete. The EWS-11 features the same bullet-proof design and construction as other Edwards sirens. The EWS-11 uses top of the line, maintenance free rotating mechanisims and hand rolled, custom formed projectors.

All exposed siren components are of heavy gauge aluminum alloy and electro-plated, galvanized steel construction, which are "powder coated" for the most durable finish available.

The entire mass of the siren is centered over the pole so no guy wires are required. Total shipping weight of the EWS-11 is 385 lbs. (174.6 kg).

EWS-11 Series

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Catalog Numbers

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Catalog Number

8 hp, 72V DC
































  • 8 HP motor
  • Port tone freq.: 460 & 920 cps
  • Weight: 385 lbs. (174.6 kg)