Description: This ultra-thin computer speaker is the latest launch of the new products, the tone produced by the microcomputer programming, with strong anti-jamming performance, stable tone, low energy consumption, long life & reliable performance. Easy to operate, with 9 kinds of sound, with light control switchand voice amplification & other functions, for all kinds of special vehicles to use. Feature:1.8 Tone Hands-Free Operation with override from the horn ring.2. Siren 400 W wireless handle remote.3. Can control 2 LED lights with Accessory Switches.4. Suitable for all kinds of special vehicles to use. Specification: Name Car Warning Alarm Police Siren Horn Speaker MIC System Voltage DC 12 V Power 400 W Control Box Dimensions 165mmx 120mmx 45mm Horn Size 156mm x 146mmx 120mm 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 & yellow can be connected to each other by 2 flashing lights. Package Included:1 X Siren Box Unit 1 X Control box 1 X Remote