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  2. Whelen Engineering Company - Wikipedia

    en.wikipedia.org/wiki/Whelen_Engineering_Company

    The Whelen Engineering Company is an American corporation that designs and manufactures audio and visual warning equipment for automotive, aviation, and mass notification industries worldwide. Founded in a Deep River, Connecticut garage in 1952, [ 1 ] Whelen has become a provider of warning lights, white illumination lighting, sirens, and ...

  3. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    A Japanese police car with a PATLITE AWS light bar NEXCO East Japan patrol car with amber and red light bar. Red is the most used color on Japanese emergency vehicles. Japanese police use light bars mounted on a raised (mechanical) platform to make them more visible over congested streets. Rotating lights are most commonly used.

  4. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    Appropriate wiring and transient protection for engine control computers is a necessary part of an installation. Wiring should be similar in size to the wiring to the vehicle engine starter motor. Mechanical vehicle mounted devices usually have an electric brake, a solenoid that presses a friction pad against the siren rotor.

  5. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    The first rubber-insulated cables for US building wiring were introduced in 1922 with US patent 1458803, Burley, Harry & Rooney, Henry, "Insulated electric wire", issued 1923-06-12, assigned to Boston Insulated Wire and Cable . These were two or more solid copper electrical wires with rubber insulation, plus woven cotton cloth over each ...

  6. Electrical busbar system - Wikipedia

    en.wikipedia.org/wiki/Electrical_busbar_system

    Enclosure comparison with normal wiring & with busbar system. Electrical busbar systems [1] (sometimes simply referred to as busbar systems) are a modular approach to electrical wiring, where instead of a standard cable wiring to every single electrical device, the electrical devices are mounted onto an adapter which is directly fitted to a current carrying busbar.

  7. Aviation obstruction lighting - Wikipedia

    en.wikipedia.org/wiki/Aviation_obstruction_lighting

    Aircraft warning lights at the Mannheim telecommunications tower, in the background the bright torchlight of a steam cracker, in the distance warning lights from wind turbines Structure using a white strobe Structure using a Red/White Strobe Closeup of an aircraft warning light on top of a highrise in Changzhou, China Closeup of an aircraft warning light on top a factory facilities Structure ...

  8. Whelen - Wikipedia

    en.wikipedia.org/wiki/Whelen

    Whelen may refer to: Christopher Whelen (1927–1993), English composer, conductor and playwright; Frederick Whelen (1867-1955), theatre director; Townsend Whelen (1877–1961), American Colonel and rifleman .35 Whelen, rifle cartridge.375 Whelen, rifle cartridge.400 Whelen, rifle cartridge

  9. Police car - Wikipedia

    en.wikipedia.org/wiki/Police_car

    Pushbars, also known as bullbars, rambars, or nudge bars, are fitted to the chassis of a police car to augment the front bumper. They allow the car to push disabled vehicles out of a roadway, breach small and light objects, and conduct PIT maneuvers with less damage to the front of the vehicle. Pushbar designs vary; some are small and only ...