Equinox
| Equinox | |
| Company | Federal Signal Corporation |
|---|---|
| Produced | 2011 |
| Type | Electromechanical |
| Sound output | 126 dBc at 100 feet |
| Frequency | 500 Hz |
| Horsepower | 6.5 |
| Succeeded by | 508 |
The Equinox was a rotating electromechanical siren produced by Federal Signal Corporation. It was initially a special order, essentially being a 2001-130 with an Eclipse rotor and stator. The use of the 2001-130's projector with a lower frequency sound hampered output, so it was redesigned into the 508, which uses a properly tuned projector to increase efficiency. These sirens can be difficult to visibly differentiate from the 2001-130 as they look nearly identical. The only difference in appearance is the "EQUINOX" sticker replacing "2001-130" on the rotator box.