Electropneumatic horn with reduced dimensions (total length 25 cm) but with high sound output, complete with electric compressor, tubing and mounting hardware.
Air horn complete with electric compressor, three tones sounding in succession or in tune. Metal chromed trumpets, complete with relay, tubing and fixing hardware.
Single or double electromagnetic horn. Acoustic unit carefully protected and manufactured of non-corrosive materials. Entirely chrome plated, complete with fixing hardware.