I installed it in my car today and it works fine. It sounds relatively louder than other sirens that are sold as car accessories, but I want to emphasize and inform you that if the traffic control device detects that you have such a tool in your car, according to the law, you will be fined with at least four violations and a traffic citation with a monetary amount, and it is up to the police officer whether to arrest you or not. I am in the coast guard and I speak from experience. Other than that, as a product, it is very good with powerful and impressive sounds. I believe I have helped. And beware... the company that sold it to me simply does their job, as long as such a product is allowed in retail trade. So, I apologize to the present company for my previous comment, I just want the buying public to be informed about what might happen if they install such a horn in their car!