7V8
| 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 are a stronger 8HP motor and it is louder.