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  2. 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

  3. Rumbler siren - Wikipedia

    en.wikipedia.org/wiki/Rumbler_siren

    Rumbler siren. A Rumbler siren is a type of emergency vehicle siren used primarily in the United States.Developed in 2007 by Federal Signal Corporation, and sounding at a low-frequency level, it is designed to be heard by motorists who may otherwise be unable to hear high-frequency sirens due to ambient noise, such as urban traffic.

  4. Comparison shopping website - Wikipedia

    en.wikipedia.org/wiki/Comparison_shopping_website

    A comparison shopping website, sometimes called a price comparison website, price analysis tool, comparison shopping agent, shopbot, aggregator or comparison shopping engine, is a vertical search engine that shoppers use to filter and compare products based on price, features, reviews and other criteria. Most comparison shopping sites aggregate ...

  5. 3 Best Grocery Price Comparison Apps To Help You Save - AOL

    www.aol.com/5-best-apps-comparing-grocery...

    Grocery price comparison apps are a great alternative, saving you time and money by showing you where to find the best deals. Check Out: Pocket an Extra $400 a Month With This Simple Hack 3 Best ...

  6. 9 Stores That Will Price Match Amazon: What You Need To ... - AOL

    www.aol.com/10-stores-price-match-amazon...

    If you find a lower price for an identical item from a qualifying retailer while shopping online, you can validate it by calling 1-877-465-6937 or by chatting with an online rep. In-store price ...

  7. Royal Rumble winners: Full list of who won WWE event - AOL

    www.aol.com/royal-rumble-winners-full-list...

    Here is the full list of men's Royal Rumble winners from each year: 1988: “Hacksaw” Jim Duggan. 1989: Big John Studd. 1990: Hulk Hogan. 1991: Hulk Hogan (second win) 1992: Ric Flair.

  8. Whelen Engineering Company - Wikipedia

    en.wikipedia.org/wiki/Whelen_Engineering_Company

    The Whelen Company is divided into four divisions and has a subsidiary called Whelen Motorsports.. The four divisions of the company are as follows: The Automotive Division — provides lightbars, dashlights, strobe kits, siren boxes, and other public warning systems to be mounted on or within vehicles, [3] rotating sirens, and student alert systems with voice broadcast capability.

  9. Comparison of orbital rocket engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_orbital...

    Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio