Xprite 100W 12V Police Siren 7 Tone PA System Electronic Emergency Vehicle Warning Siren-Speaker PA System Set w/ Handheld Microphone FEATURE: This Emergency Warning Horn siren PA system includes a control box, a wired hand-held microphone and a heavy-duty speaker. ADVANTAGE: With an adequate power output of 100W and powerful speakers, with a higher rating of 97-105dB you get quality audio output which is audible from a distance away. MULTI FUNCTION: Multiple operation options which include horn, and siren , with the siren option giving you yelp, wail, hi-lo and hi-lo and also manual horn & manual siren. EASY INSTALLATION: Easy to install anywhere with 12V DC Power - Operation Manual is included, and alse easy to operate. APPLICATION: Fit for police, ambulance, fire, engineer, private vehicles, etc.