Description: Set with 9 sounds of warning, convenient to use. Powerful sound. Come with hook,save your space. Specification: Voltage: 12V. Sound level: 150db. Impedance: 8Ω. Color: Black. Power: 400W. Current: 20A. Applications: Universal for cars. Type: Alarm horn. Alarm diameter: 140mm. 9 series siren. Wiring Instruction: After the green wire harness is plugged in, two green wires are connected to the speaker, and red and black wires are connected to the positive and negative. terminals of the battery. The yellow and white lines are connected to the flashing lights. It is not recommended to connect the headlights. Professional Installation Recommended: - If you are installing this on your lighter plug in your vehicle, you may need to increase the fuse on your lighter outlet. - Easy to install anywhere with 12V Power. - No installation guide provided, please consult with car audio installer or mechanic. - Custom installation required. Requires 12V Power delivered to 2 wires. - You may have to extend the wire between the speaker and the control module if you are mounting this in your engine bay. Package Included: 1xWire Cable. 1xLight Control Cable. 1xHook. 1xMainframe. 1xHorn. 1xSpeaker. 1xUser Manual. 1xSet Of Screws