The Basic Information Of The Police Siren

Different sirens

Yelp sounds of siren are showing driver and passerby to give away, often used in emergencies and in downtown.

Once siren sound from wail to buzzer, it indicates that the vehicle is approaching intersection or traffic jam area.

Therefore,different siren sounds have different meanings.

for more information about different siren sounds, please click on the different siren sounds page.

This is a video we took directly from the production line. In this video, we show you how to change the tones of the police siren and nd how to change the sound. The siren shown is our police siren of CJB-8HD series, which has the advantage of clear sound quality and direct panel operation

Frequency of the police siren.

Siren frequencies between 300Hz and 10KHz, depending on the each specification each.

How to make police sirens

Emergency vehicles, ambulances, fire trucker, recovery vehicles can use police sirens.

long history of usage siren and with the development of technology, siren are constantly updated.two main types of sirens: electronic and air-operated siren.

Firstly,Electronic siren can operat directly in the driver’s room, maintain easily and widely used in various fields in police, fire, and ambulances.

Secondly,Police sirens contain oscillators, modulators and amplifiers to synthesize specific sirens that play through external speakers.

Third,the cover of siren die-cast and can protect external pressure.
when siren production finished, will test its function to ensure meets the standard.