One High Tone / One Low Tone Electric Horns Dimensions: 9-1/4″ L x 6-5/8″ W x 3-1/2″ D Terminals: Two Current Draw: 5 Amps Each Horn Power Source: 12 Volt Min db rating @ 4″: 130 db Frequency High Tone: 485 Hz Frequency Low Tone: 405 Hz Designed for addition to, or replacing, the original equipment horns. Rugged Construction Features steel housing and plastic projector Cooper wire coil motor Corrosion resistant finish Made in the USA Includes Universal Mounting Brackets ** Not Available in 24 Volt **