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• 19:08, 14 August 2024 ArxCyberwolf talk contribs created page Category:Three-Signal Sirens (Created page with "While most mechanical sirens are simply two-signal sirens, there are several sirens that make use of a mechanism to perform a special third signal. These include hi-lo, pulse, or a variety of other signals. Three-signal sirens make use of solenoids, dampers, sliding stator rings, or other mechanisms to perform these signals. Three-signal sirens are usually used at fire stations as a special signal for fire calls, as well as for other purposes such as in industrial plants...") Tag: Visual edit