AFI XLP series horns are engineered for a long life; 304 stainless steel is used throughout the major components including the diaphragm, motor cover, trumpets, mounting brackets and hardware. The internal motor has been given a complete plastic over-molding for additional corrosion protection. This dual trumpet horn is engineered for use with 12V systems and produces 123db (at one meter). Know that you are installing a long lasting horn when your install an AFT dual trumpet XLP horn.