Features: Features wail, yelp, phaser and air horn tones.Remote center-off switch for wail and yelp tones, center-off momentary switch for phaser and air horn tones. Control switches mount discreetly on dash. Compact amplifier conveniently fits in remote locations. Advanced design stays cooler to the touch. This solid-state siren powers one 100 watt or one 58 watt RMS speaker. Comes complete with all necessary wiring. Speaker sold separately.