The Powercall AH-6 is a 100 Watt Air Horn unit only. The Dimensions of this unit are 6x5x1.5. The unit remote mounts anywhere in your vehicle and has a remote push button switch to operate the air horn. This is a simple 4 wire hookup consisting of Power, Ground, Speaker lead and then mounting your push button. Mount your button in a hidden or open location that is convenient to you. This unit sells for $120.00. The AH-6 Requires it's own 100 watt speaker which can be purchased at Powercallsirens or you can use any existing 100 watt siren speaker.  CLICK HERE if you want to see our siren speaker line.