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  2. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    By this time, it made outdoor warning sirens, police sirens, fire alarms, and outdoor lighting. By 1961, Federal Sign and Signal had gone public, trading on the NASDAQ market. This was when new products started being manufactured and sold, such as the Federal Signal STH-10. In 1976, the company became Federal Signal Corporation.

  3. North American railroad signals - Wikipedia

    en.wikipedia.org/.../North_American_railroad_signals

    Vertical color light signals are the second major pattern of color light signals, and today represent the most popular form of signal in North America, supplanting the searchlight. [ citation needed ] These signals are not different from the triangular type color signal in function, but present a much altered visual appearance.

  4. Mars Light - Wikipedia

    en.wikipedia.org/wiki/Mars_Light

    Mars Lights are still used on fire fighting apparatus. The lights continue to be produced, and are available from Tri Lite / Mars, located in Chicago, Illinois. The Los Angeles County Fire Department required Mars lights as a standard LACoFD warning device until the Federal Sign & Signal BeaconRay was adopted as a replacement. [1]

  5. Federal Signal 3T22 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_3T22

    The Federal Signal 3T22 was originally designed as the 2T22 in 1952 or 1954. The 2T22 has the same number of ports and cones. It can produce two main signals (it can produce more but the other signals are rarely used), hence the name "2T22" (the 2 at front representing the 2 choppers, and the 22 representing the amount of horns).

  6. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Historically, white was used in combination with red bulb lenses in the Federal Signal Corporation Beacon Ray rotating beacon, introduced in 1948 and the later 1960s and 1970s model P A lights equipped with clear domes on through the 1980s, when revolving bulb and reflector type emergency lighting including the later 1970s Twinsonic and ...

  7. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    Federal Signal 3T22 / 2T22; Federal Signal Model 2; Federal Signal Modulator; Federal Signal STH-10; Other. Chrysler Air-Raid Siren; Sentry Siren; SiraTone; Decot;

  8. Thunderbolt (siren) - Wikipedia

    en.wikipedia.org/wiki/Thunderbolt_(siren)

    A Federal Signal Thunderbolt 1003 siren. The Thunderbolt is a mechanical outdoor warning siren that was manufactured by Federal Signal Corporation from 1951 until its production ended in 1991. [1] It is a unidirectional, rotating siren with a large square-shaped horn, and can come in various colors, usually yellow, by request.

  9. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    Federal Signal Model 5 in Ballston Spa, New York, U.S.. Sirens are sometimes integrated into a warning system that links sirens with other warning media, such as the radio and TV Emergency Alert System, NOAA Weather Radio, telephone alerting systems, Reverse 911, Cable Override, and wireless alerting systems in the United States and the National Public Alerting System, Alert Ready, in Canada.

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