Universal siren set for private cars with 130dB sound1、200W siren, practical to use in emergencies to draw the public's attention. It is best to mount the horn on the roof of the car, not on the hood, to avoid it falling off in harsh driving conditions. 2、Features 130dB loud and clear sounds that others can hear from the distance. 8 kinds of tunes, meet your different needs to handle various situations. 3、The siren can amplify your voice through the handheld microphone, simple top operate, just press the button on the side and talk. 4、The siren has a port on it back, designed for flashlights (not included in the package), bring much convenience for you. 5、Simple installation and wiring, 2 green wires connect to one horn, 2 blue ones to the other, the red one to the battery's anode, and the black one to its cathode. 6、Wide application, fit for all kinds of specific vehicles, including police car, fire trucks, ambulances and private car.