Car Speaker 110db 12V Allarme Auto Moto 3 Tone Siren Loudspeaker Car Horn Sirene Policia Moto Ambulance Car Alarm Sound Speakers

12V power supply, car and motorcycle are available.

Installation : 12V battery cathode, black line to connect the battery negative electrode, the screw can be fixed, installation is very simple.

Attention: 12V is positive, black line is negative. If it is wrong, it will short-circuit and burn.