Wolo Model 200 - Twin Power, 12 - Volt 118 Decibels, 520/430 Hz; 6in. Diameter. ELECTRIC POWERED - VERY LOUD. Two durable red plastic trumpets produce the same powerful sound as an air horn. Only two wires to connect, installs in minutes to the vehicle's existing horn system. Ideal for all 12 - volt vehicles. DOES NOT REQUIRE A COMPRESSOR OR AIR LINES. Maintenance free. All needed mounting hardware is included. Instructions in English / Spanish. Electric Powered • Very Loud
