... , 150W, 200W, 300W, 400W, 600W, 800WTone: 1. Monotone: Yelp, Hi-lo, Wail, Engineering, high-frequency impulse, Yelp-s. 2.Manual: Horn ... -s, COCO, siren. 3.Mix: Yelp + Wail, Wail +Wail, Hi-lo+ Yelp-s,Wail+ Yelp-s, Engineering + Yelp-s, high-frequency ...