One pair JGY-102-2,12V/24V,JGK-505valve with aluminum coil/JGK-502 ... copper coil,Dual tone electric air horn One pair JGY-102-2,12V/24V,JGK-505valve(with aluminum coil)or JGK ... ,Tristan - da Cunha,Azores and Madeira Islands One pair JGY-102-2,12V/24V,JGK-505valve with aluminum coil/JGK-502 ...