Police siren *Voltage:12v *Power:150W,200W,300W,400W *ISO,CE certificated *With high quality Police siren1.Tone: yelp, Wail, Hi-lo, engineering, Horn, Yelp-s. 2.Lighting: two-way3.voltage: 12V4.Warning sound and microphone with volume control Police siren amplifier CJB-8A