Categories
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The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Electromechanical Siren Controls (6 members)
- Electromechanical Sirens (42 members)
- Electronic Siren Controls (5 members)
- Electronic Sirens (27 members)
- European systems (1 member)
- Exclude in print (1 member)
- Fedelcode (0 members)
- Federal Signal Corporation (31 members)
- Gasoline powered (1 member)
- Georgia systems (3 members)
- HPSS (2 members)
- Hidden categories (1 member)
- Hormann (0 members)
- Illinois systems (2 members)
- Indiana systems (4 members)
- Internal link templates (1 member)
- Interwiki link templates (1 member)
- Mechanical (1 member)
- Michigan systems (1 member)
- National systems (1 member)