Description: </br>A siren is a loud sound making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars and fire trucks. The siren speaking we are presenting is a professional one of 200W with 18 tunes and comes with hand-held microphone. You can also connect with flash lights (not included) to fulfill more needs.</br>Installation: </br>Easy to install anywhere with 12V DC power. May require custom installation. You may have to extend the wire between the speaker and the control module if you are mounting this in your engine bay. </br>Wiring Instructions?</br>1.Two green lines connect one speaker. 2.Black lines connect 12V battery power negative. 3.Red lines connect 12V battery power positive. Package Content:</br>1 X Control Box</br>1 X Horn</br>1 X USB Cord</br>1 X Light Control Line</br>1 X Horn Power Cord</br>1 X Remote Control</br>1 X Cigarette Lighter Plug</br>1 X Spare Fuse</br>1 X Instruction</br>