Piezo Siren: S.P.L: 108+/-3dB; Rated Current:180mA; Need to work with main set. Piezo Siren for Motorcycle:-S.P.L.: 108dB+/-3dB-Rated Current: 180mA-Need to work with electornic  main set.-High intensity shell, light weight, small size, good quality with excellent workmanship and...