In most European countries, the police siren is a two-tone sound. They are usually loud and high-pitched. The siren is typically used by police department responding to an emergency, such as a traffic accident.
The CJB-100CD electronic siren is suitable for various types of police cars. It can be in 80W, 100W, and 150W. It conform to national standrad GB8108-1999. It has a super-thin design, harmonious with inner decoration. Adjustable metal chrome plated swing brackets are included in the box. The tones can be adjusted according to your options.

In some countries, such as Germany, police sirens are much more complex. In Italy, the police siren is more of a single-tone sound. This can be heard in many cities, In the United Kingdom, the police siren is a long, continuous wail. No matter what country you are in, the purpose of a police siren is to alert citizens of an emergency situation.