This car alarm is for police,ambulance car use,and some other use with high quality

This car alarm's Technical Datas is as below :
1.Rated Power80W
2.Rated Voltage: 12V
3.Rated Impedance:4Ω,8Ω   
4.Frequency Range: 500-4600Hz 
5.Sound Pressure:118-120Db
6.Sound Distortion Factor:≤5%