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. It had many variations even including a coded version the 500-C witch has only one rumored location. it had a single damper supposedly witch allowed it to give of pulse signals. the most common active variation is the 500AT witch has a few known locations.