Innovative Lighting Marine Hidden Horn - Black. For use with vessels under 12 meters (39.4 feet). This drop-in hidden horn uses "SETS" horn technology and draws less than 1/2 an amp. The unit is polarity protected and features a solid state with no moving parts. Includes a built-in water evacuation drainage system and a mounting gasket. This horn requires a 2.25" mounting hole for installation. Available in black white and cream colors. Features/Specifications: Designed for use with 12 or 24V DC systems For use with vessels under 12 meters (39.4 feet) Uses "SETS" horn technology and draws less than half an amp Requires a 2.25" mounting hole for installation Horn Color: Black Features of Innovative Lighting Marine Hidden Horn Designed for use with 12 or 24V DC systems For use with vessels under 12 meters (39.4 feet) Uses "SETS" horn technology and draws less than half an amp Requires a 2.25" mounting hole for installation Package Contents: Innovative Lighting Marine Hidden Horn Innovative Lighting 540-0000-7: Marine Hidden Horn - Black