The signal generator K-SM 20 generates the special signal prescribed in the Federal Republic of Germany according to DIN 14610 and has for this, in combination with the loudspeakers K-SR 30, the General Design Certification M 25027. Furthermore, the standard signals for France, Italy, the Netherlands and Austria are available. In another version, the US signals are provided. Sound pressures of 117 dB(A) to 123 dB(A) (depending on the loudspeaker used) at a distance of 1 metre are achieved.

The pressure chamber system of the loudspeaker K-SR 30 is housed in a robust, weatherproof plastic housing, which impresses by its small size. With two loudspeakers a sound pressure of 123 dB(A) at a distance of 1 metre is achieved.

The pressure chamber system of the loudspeaker K-SR 30 is housed in a robust, weatherproof plastic housing, which impresses by its small size. With two loudspeakers a sound pressure of 123 dB(A) at a distance of 1 metre is achieved.