... 4 lighting channels 2. With external trigger 3. Tones: 16 tones 4. Power: 100W, 150W, 200W, 300W Police ... 200W, 300W, 400W, 600W, 800WTone: 1. Monotone: Yelp, Hi-lo, Wail, Engineering, high-frequency impulse, Yelp-s. 2 ... , siren. 3.Mix: Yelp + Wail, Wail +Wail, Hi-lo+ Yelp-s,Wail+ Yelp-s, Engineering + Yelp-s ... different engine: HA911-B 100watt 16 tones Siren for Police/ Ambulance/ Fighting/ Contruction truck ...