EOWS Series
| EOWS series | |
| Company | Federal Signal Corporation |
|---|---|
| Produced | 1980-2001, 612 available on special order until at least 2006 |
| Type | Electronic |
| Sound output | 115-132 dBc at 100 feet |
| Frequency | 850/1020 Hz |
| Succeeded by | Modulator |
The EOWS series (Electronic Outdoor Warning Siren) was a line of electronic sirens produced by Federal Signal Corporation.
Models
There were a total of 6 mainstream models in the series:
| Model | Image | Output | Drivers | Notes |
|---|---|---|---|---|
| EOWS*115 |  |
119 dBc | 12 (1 per horn) | The earliest model in the series. Uncommon. Sound output is likely inaccurate regardless of documented rating. Output is likely 115 dBc.
|
| EOWS*408 |  |
128 dBc | 8 (2 per horn) | The smallest rotating siren in the series. Quite rare. Sound output rating is inaccurate in documentation. Actual output rating is unknown.
|
| EOWS*612 |  |
124 dBc | 12 (2 per horn) | The most popular model. Many active examples can still be found today.
|
| EOWS*812 |  |
132 dBc | 12 (2 per horn for bottom 4 horns, and 1 per horn for top 4 horns) | The largest siren in the series. Rather uncommon. Sound output is likely inaccurate regardless of documented rating.
|
| EOWS*1212 |  |
115 dBc | 12 (1 per horn) | The successor to the 115.
|
| EOWS*M12 |  |
123 dBc | ? | Vehicular model. Decibel rating was measured at ten feet.
|
EOWS*115
The EOWS*115 was the earliest model produced. It is unique in the series in that it uses fiberglass re-entrant horns.
EOWS*M12
The EOWS*M12, or Mobile SiraTone, is a vehicle mounted model.[1]