The FS loudspeaker, that has a ferrit magnet, is suitable to work with the electronic module PS10. The FS loudspeaker can be mounted on cars, vans and boats. The loudspeaker has a high resistance from water and dust infiltration ( IP66). The FS loudspeaker is homologated with the electronic module PS10 in Italy, Germany, France and Swiss on every emergency and security vehicle. The PS10 system is approved against electromagnetic disturb in conformity to the restrictive standard CEE 2009/19 and ECE Reg.10 and he can be used in every country on emergency and security vehicles. The FM loudspeacker can be mounted on vehicle of 12V and 24V to have high sound level every time .