7V8

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7V8
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Company Sentry Siren Incorporated
Produced ?-present
Type Electromechanical
Sound output 112

The 7V8 is an omnidirectional siren produced by Sentry Siren Incorporated.

7V8-B

7V8-B
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Company Federal Signal Corporation
Produced 2004-present
Type Electromechanical
Sound output 118/121

The 7V8-B is the battery backup version of the 7V8. It has a a couple other differences from the 7V8. Which is a stronger 8HP motor and it is louder.