Feature: Set with 9 sounds of warning, convenient to use. Powerful sound. Come with hook,save your space. Name:Loudspeaker host With microphone Item Type:Multi-tone & Claxon Horns Voltage:12V/24V Sound level:150db Impedance:8Ω Power:200W Current:20A Applications:universal for cars Type:alarm horn Alarm diameter:140mm 9 series siren 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. Description: With an adequate power output of 200W and powerful speakers, with a higher rating of over 150db you get quality audio output which is audible from a distance away It contains 9 warning tones to fit for police, ambulance, fire, engineer, private vehicles, etc. 200 Watt amplifier . 9 Tones. 2 auxiliary switches Hands-Free Operation with override from the horn ring. Pre-wired push to talk microphone. Heavy duty, rust resistant construction speaker. Universal mounting bracket The warning system offers two switches which you can use to power other external devices and appliances, such as Strobe Lights. Material: Metal Color: As shown Package Contents: 1 x Loudspeaker host With microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.