100 Watt Undercover Siren Features: Four Function, Wail, Yelp, Phaser And Air Horn Tones! Complete With Center Off Switch For Wail & Yelp Tones And a Momentary Switch For Phaser & Air Horn Tones. Remote Control Panel Is Compact And Can Fit Just About Anywhere Under Dash. Siren Box Measures: 5.4"L x 2.5"H x 4.5"W.