Model 4001: ALERT? three tone siren amplifier, · WAILER · YELP · AIR HORN, 12-volt 50-watt.  The amplifier compact and streamlined and the painted metal mounting bracket permits the siren to be easily mounted under the dash or on a console.  Kit comes complete with noise-canceling P.A. microphone, mounting bracket, hardware, and wiring harness.  Features an on /off volume control, allowing the user to adjust the siren or P.A. system from soft to loud.  Change the siren tones with the simple press of a button.    Instructions printed in English and Spanish.

Siren controller :

• 12-volt / 50 watts maximum output  
• L 4" x W 3-3/8" x H 1"
• Metal case and mounting bracket
• Weight 1.5 pounds