Siren with 4-position rotory mode. Backlit operation panel for easy night-time readability. Function selector provides: horn, wail, yelp, phaser and two-tone modes. Dual push-buttons for manual, "phaser" and air horn override functions. Designed to exceed SAE, GSA, and KKK specifications. Amp: 8. CTN: 4. For ambulance, fire truck and police markets.