European style siren... need help

[FedCop]

Looking for purchasing or supplier information on European style siren. I have heard it referred to as a Martin Horn or an Alarm. I am looking for the true HI-LO tone horns used in Europe, not the Americanized version found on many U.S. siren control boxes. This item should be a single use electric warning device, usually VERY loud. Not interested in the older style horns usually assembled on the bumper of the vehicle and will rattle your teeth out when activated. ANY help or guidance appreciated.

[Leigh Harrington]

Different European countries use different sounding horns, the French use a very distinctive type, more horn than siren. In London our vehicles have a choice of sirens you can use, most people use the standard sound but if you are in a convoy of vehicles on a chase etc each vehicle can change its sound so that the public realise there is more than one vehicle they need to get out of the way for.
I will amke enquiries for the name of the manufactures for you and you can contact them direct.