Zone Tech 7 Tone Sound Car Siren Horn with Mic PA Speaker System Emergency Sound Amplifier - Black 80W Emergency Sounds Electric Horn-Hooter/Ambulance/Siren/Traffic Sound with PA Microphone System &#9658; 7 TONES - The Zone Tech sound 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. &#9658; LOUD AND CLEAR - The Zone Tech sound 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 away. &#9658; PREMIUM QUALITY - The Zone Tech sound car siren is constructed from premium quality materials to ensure maximum strength and durability for long lasting usage. The kit includes solid state PA microphone assembly for clear voice commands and a 80 Watt siren system that can be heard loud and clear. &#9658; VERSATILITY - The Zone Tech sound car siren is not only for vehicles, but also anywhere for its appropriate usage. The car siren is also perfect for Security Vehicle-Emergency Response Vehicles (ERV). &#9658; EASY TO INSTALL - The Zone Tech sound 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 large 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.