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  2. Q2B - Wikipedia

    en.wikipedia.org/wiki/Q2B

    A fire truck running the E-Q2B siren. Today Federal Signal's Q2B siren is still in wide use. The majority of users of the Q Siren are fire departments, although some ambulances and heavy rescue squads have employed the Q-siren. The Q-siren produces 123 decibels at 100 feet (30 m) with an operating current of 100 amps at 12 V DC (1.2 kW). [1]

  3. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95

  4. 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. On Feb 22, 2000 ...

  5. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    Thunderbolt (siren) Federal Signal 3T22 / 2T22; Federal Signal Model 2; Federal Signal Modulator; Federal Signal STH-10; Other. Chrysler Air-Raid Siren; Sentry Siren;

  6. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    A Federal Signal Modulator siren in Bay Head, New Jersey. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified ...

  7. Federal Signal STH-10 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_STH-10

    The Federal Signal STH-10 is a discontinued omnidirectional siren produced by Federal Signal over a span of 50 years. [ 1 ] It is a 12 Port Omnidirectional 10Horsepower siren, most examples are still around today.

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  9. 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).

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