500
| 500 | |
| [[File:{{{image}}}|200px]] | |
| Company | Federal Signal Corporation |
|---|---|
| Type | electromechanical |
The 500 Series was a line of electromechanical sirens produced by Federal Sign & Signal.
| 500 | |
| [[File:{{{image}}}|200px]] | |
| Company | Federal Signal Corporation |
|---|---|
| Type | electromechanical |
The 500 Series was a line of electromechanical sirens produced by Federal Sign & Signal.