Usage Tips:This car siren offers 7 great sounds; a traditional hooter, a ringing fire alarm, a wailing ambulance, a blaring police siren, the distinct traffic sound, etc. It has a pre-wired microphone with push to talk button and an Weather Proof Speaker. Loud and clear - This car siren is handy but loud and clear for its size. You have to be firm and solid when on the PA speaker for volume. The tones can be heard clearly even a mile . - This car siren is constructed from materials to maximum strength and durability for long lasting usage. The kit includes solid state PA microphone assembly for clear voice commands and a siren system that can be heard loud and clear. Versatility - This car siren is not vehicles, but also anywhere for its appropriate usage. The car siren is also perfect for Security Vehicle-Emergency Response Vehicles (ERV). Easy to install - This car siren is easy to install just connect the RED wire to a 12v source (inline fuse included). Run the BLACK wire to a ground (or negative battery post). With very vehicles, the installer may need to purchase additional wiring to elongate the wires. Typical install time is less than a 1 hour. Check your local laws; it may be illegal for this siren to be installed in unauthorized vehicles. It installs anywhere with 12V DC power. Type: Air Horn Power: 20w,120 decibels Voltage: 12V Fitment: Fit for most of motorcycles, mopeds, off roads,cars, trucks Colour:black Material:plastic Package Contents: 1 x Horn 1 x Microphone 1 x Mounting Bracket 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.