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...ory:Federal Signal Corporation]][[Category:Single Toned Sirens]][[Category:Sirens]] ...

...tromechanical]] produced by American Signal Corporation. It is one of four sirens in [[Tempest Siren Series]] line. This siren is the successor of the T-135 [[Category:Single Toned Sirens]] ...

The 20V1T is a omnidirectional single tone siren produced by [[Sentry Siren Incorporated]]. ...idirectional Sirens]][[Category:Single Toned Sirens]][[Category:Dual Toned Sirens]][[Category:Sentry Siren Incorporated]] ...

...ame in multiple models: The S-2, S-5, S-7.5, and S-10. It was available in single tone 9 port for the S-2, S-5 and S-7.5, and 8 or 9/12 for the S-10. ...nicators of America]][[Category:Dual Toned Sirens]][[Category:Single Toned Sirens]] ...

|output = 113 (Single Tone) 108 (Dual Tone) |hertz = 533 (Single Tone) 427/533 (Dual Tone) ...

[[Category:Electromechanical Sirens]] [[Category:Omnidirectional Sirens]] ...

...two motors, creating a warbling effect while sounding since the two 8-port single tone choppers rotate at two different speeds. [http://www.sentrysiren.com/warning-sirens-products/outdoor-warning-sirens/siren-16v1t-b/ 16V1T-B on Sentry's website] ...

...is 12 inches in diameter coming in 2 different port ratios: 12 and 8 port single tone. The siren was housed in a very simple enclosure that resembles an air ...]][[Category:Single Toned Sirens]][[Category:Sirens]][[Category:Dual Toned Sirens]] ...

...ional Sirens]][[Category:Electromechanical Sirens]][[Category:Single Toned Sirens]][[Category:Sentry Siren Incorporated]] ...

...[[American Signal Corporation]]. The siren is also part of the other three sirens in the [[Tempest Siren Series]]. [http://www.americansignal.com/products/mechanical-sirens/tempest-siren/tempest%E2%84%A2-121-siren/#content-tab-0-0-tab T-121 on ASC' ...

...ating Sirens]][[Category:Single Toned Sirens]][[Category:Electromechanical Sirens]] ...

...ed by The Sterling Siren Fire Alarm Company, of Rochester, New York. These sirens were primarily marketed for fire alarm and general alarm use, intended to s ...also offered, with the Sterling Model M being among the first double toned sirens manufactured. ...

[[Category:Electromechanical Sirens]][[Category:Single Toned Sirens]][[Category:American Signal Corporation]] [[Category:Omnidirectional Sirens]] ...

...ll rotating electronic siren produced by [[Whelen Engineering]]. It uses a single 400W compression driver, and is incapable of making voice announcements. ...ens]][[Category:Rotating Sirens]][[Category:Directional Sirens]][[Category:Sirens]] ...

...for Models 2, 7, SD10, STH10, STL10 |url=http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf |hertz =690 (Single Tone) 690/517.5 (Dual Tone) <ref name="manual" /> ...

...ectronic Sirens]][[Category:Omnidirectional Sirens]][[Category:Directional Sirens]] ...

...egory:Single Toned Sirens]][[Category:Electromechanical Sirens]][[Category:Sirens]] ...

...ns, Models 2, 5, SD10, STH10, STL10 |url=http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf |manual = http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf ...

[[Category:Electronic Sirens]][[Category:Single Toned Sirens]][[Category:American Signal Corporation]] [[Category:Omnidirectional Sirens]] ...

|produced= 1955-Dec. 5, 2005 (Single phase model discontinued on Dec. 4, 1995) ...ns, Models 2, 5, SD10, STH10, STL10 |url=http://www.civildefensemuseum.org/sirens/manuals/2-5-SD10-STH10-STL10-255A154F.pdf ...