Wiring Method:
The main red line is connected to the positive electrode of the battery,
the black line is connected to the negative pole, and the other 2 green wires are
connected with the horn. The white and yellow can be connected to each other by 2 flashing lights.

【AUDIO CLARITY AND AUDIBILITY】- Voltage: 12V; Current:≤15A; Sound Level: ≥125dB. As the pa system for cars is equipped with a powerful host and speaker and is anti-jamming, sounds can be heard from the distance.
【8 COMMON TUNES】- The car alarm system is designed with sirens of 8 kinds, such as yelp, wail, hi-lo, etc. They will meet your needs to handle various situations.
【EXTERNAL SOUND INPUT】- The police siren can also amplify your words with a built-in microphone in its remote control. The interface on the back of the host allows the connection to flashlights (Not Included).
【EASE OF INSTALLATION】- The siren speaker is easy to install on your vehicle if you follow the instruction below. It takes minutes to connect wires.
【WIDE APPLICATION】- The pa speaker is fit for all kinds of specific vehicles, including police cars, fire trucks, ambulances and private cars.